Periods and pregnancy should be like two parallel lines in a body. They should never intersect. But you have seen the traces of blood patches in your undies and confirmed that you are bleeding during pregnancy. But that’s not period blood. It’s just spotting during pregnancy and isn’t capable to fill a pad or tampons.

Why Am I Bleeding Buring Pregnancy?

Why Are They Parallel Lines?

Periods and pregnancy are parallel lines. Here is the answer. From the day of puberty, the body starts to prepare for pregnancy. In the follicular phase, one of the follicles becomes dominant. And this follicle releases an egg in the ovulatory phase.

The fusion of an egg with sperm results in fertilization and later it is implanted in the uterine. So it’s the initial journey of pregnancy and the body starts the necessary hormones for it. But if there is no fertilization the reproductive hormones estrogen and progesterone start to decline and the lining of the uterus along with blood and other tissue shed as vaginal bleeding.

So missing periods is an early sign of pregnancy. (You also miss periods because of several other reasons)

But this hasn’t answered your query. You have found spotting in your undies and can’t misbelieve your eyes. Consult the doctor if you have heavy flow but spotting may be because of the following reasons:

Spotlighting Reasons For Your Spotting 

1)Implantation Bleeding

During the implantation (the embryo gets attached to the uterine wall)there will be small bleeding through the vagina. It is usually found 10 to 14 days after conception.

Signs and symptoms 

  • Tender, swollen breasts or nipples
  •  Fatigue or feeling tired
  •  Headache
  •  Constipation 
  • Morning sickness
  • Food cravings
  • Mood swings
  • Frequent peeing

2)Molar Pregnancy 

It is a very complicated but rare situation where there is an abnormal growth in the cells of the trophoblast(these cells normally develop into the placenta). They mimic the normal pregnancy at the beginning but soon there will be dark brown to bright red vaginal bleeding. Other signs and symptoms include 

  • The rapid growth of the uterus 
  • High blood pressure
  • Preeclampsia 
  • Ovarian cysts
  • Anemia
  • Hyperthyroidism 
  • Pelvic pain 
  • Nausea

3)Ectopic Pregnancy 

It is a condition where fertilized egg without getting attached to the uterus lining, gets implanted and grows outside the main cavity of the uterus.

This is also called tubal pregnancy where the zygote is implanted in the fallopian tube which carries the egg from the ovary to the uterus. The implantation can also occur in the ovary, abdominal cavity, or the lower part of the cervix. Signs and symptoms include:

  • Missed periods
  • Nausea
  • Breast tenderness 
  • Shoulder pain
  • Fainting 
  • Vaginal bleeding 

4)changes In The Cervix

The inflammation or growth in the cervix can cause infection.


Infection on the areas like the cervix, or vagina, or a sexually transmitted infection such as chlamydia, gonorrhea, or herpes can result in bleeding in the first trimester.


The most obvious sign of miscarriage is vaginal bleeding 

Be A Little Cautious-Bleeding During The Second And Third Trimesters

Unlike bleeding in the first trimester which is never a matter of worry, you need medical attention for bleeding during the second and third trimesters.

Here Are The Reasons For The Bleeding In The Later Months Of Pregnancy 

preterm labor or cervical dilation

The labor that occurs before the 37 weeks of pregnancy is called preterm labor. Premature babies are born as a result.

-Frequent contractions in the abdominal area

-Constant low, dull backache

-Lower pressure in the abdominal area

-Mild abdominal cramps

-Vaginal spotting or light bleeding

-Preterm rupture of membranes

-Vaginal discharge soon turns watery

Placenta previa 

It is through the placenta, the growing baby gets the necessary nutrients and oxygen. Placenta previa is a condition where the implantation of the placenta occurs either in the bottom of the cervix or the birth of a baby isn’t possible through the vagina. Usually, it is attached to the top of the uterus.

The lower part of the uterus gets thinner To accommodate the growing baby. But in the case of placenta previa, the placenta is attached to the bottom of the uterus. This causes bleeding in the second and third trimesters.


  • Bright red bleeding 
  • Contractions
  • Anaemia
  • Pale skin
  • Low blood pressure 
  • Nausea

Placental abruption

It is a very complicated situation in pregnancy where the separation of the placenta from the inner wall of the uterus takes place. It can lead to a serious situation where the baby is deprived of oxygen and nutrients, resulting in heavy bleeding in the mother.


  • Vaginal bleeding
  • Abdominal pain
  • Back pain
  • Uterine tenderness 
  • Uterine contractions

Placenta accreta 

This is a condition where the placenta is inseparable from the uterine wall. This can cause bleeding in the third trimester 

Rare condition 

You experience heavy bleeding at the time of delivery if you have complications like vasa previa or uterine rupture. It’s very rare and only 3 percent of females experience it.

Frequently Asked Questions About Why Am I Bleeding During Pregnancy? 

1)Is bleeding in periods an indicator of any serious problem?

Bleeding during the trimester is common but beware if you have bleeding in the second and third trimesters.

2)How can I diagnose complications in the pregnancy?

Ultrasound scans during pregnancy will be able to detect complications in the pregnancy.

–  The Mom N Baby

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