Worried About Period not Starting

Patient : I had to start my birth control pills a week late (3 weeks ago), and now it's been 3 days after my normal period would start. I'm having all the symptoms including sore breasts and lower back pain, but no menstrual bleeding. I guess I should also add I had unprotected sex 2 weeks ago. Could my period be late because of the birth control or because there's a chance I might be pregnant?
Symptoms:  Lower back pain, sore breasts, no menstrual bleeding
Doctor :   Hello, Ideally, birth control pills have to be started from day 2 of the cycle. So that it can achieve its effectivene ss by the time ovulation is due and can thus prevent ovulation. But as you have started a week late, then there may be chances of ovulation in this cycle if the birth control would have not reached adequate levels by 14-16 day of cycle. So if you have had unprotected intercourse 2 weeks ago and have missed period by 3 days , then it is better to rule out pregnancy with a urine pregnancy test on the 7 day post missed period. If the pregnancy is ruled out then the symptoms of sore breasts, low back ache mood swings can be attributed to premenstrual syndrome and your withdrawal bleed would start in few days on completing the pack or once you are on the sugar pills. I hope I have answered your query in detail, wishing you good health, regards,

Related Q&A

Q: Hi, am having a crypic pregnancy. I am about 31 fetal weeks, 33 gestational weeks. I am now having.daily Braxton hick...

Q: Can I take Tylenol when pregnant? I am a 32 year old women who is 28 weeks pregnant. I've had some massive splitting ...

Q: Insulin does not cross the placenta but glucose does, how will the baby’s body handle elevated glucose in the m...

Q: Is it possible to get pregnant while on the implanon? And if so, would the fetus survive or would it die with the imp...

Q: I have been on BCP for a while..It it normal to still breakthrough bleed? The blood is dark red to brown what can I d...

 
DOCTOR ADVISORY BOARD
218

Dr. James Obaji M.D.

  • 247 Reviews
  • Family Physician
173

Dr. Suneel Sharman M.D.

  • 190 Reviews
  • Family Physician
138

Dr. Pat Golden M.D.

  • 169 Reviews
  • Cardiologist
98

Dr. Kunaal Jindal M.D.

  • 112 Reviews
  • Plastic Surgeon
CNN
BBC
MSNBC
CBS
abcNews
FoxNews