Why is my period delayed after having sex?

You may be experiencing pain because of prostate infection or a UTI. I advise you to visit a doctor for proper diagnosis. He may suggest some antibiotics for your problem. Also, I suggest you take lot of liquids like cranberry juice etc. to remove the bacteria and toxins from the system. I hope this answer proved helpful. 

If you're unsure and concerned of pregnancy then it's important to consider getting tested or take a home pregnancy test. 

Yes its possible, but it is a relatively new procedure and success rates may vary

Medications during this time re­quire medical advice. High blood pre­ssure needs tre­atment for mom and baby's well-being. Doctors some­times adjust dosages or change pre­scriptions. Follow their guidance closely and ke­ep them informed.

If it's within 72 HOURS of sex,, take emergency contraception.. Consider regular birth control.. Get tested for STIs.. Make sure to use protection next time.

Feeling worried after unprotected sex is normal. Anxiety is common in this situation. Emergency contraceptives like the 'i-pill' are most effective within 72 hours. Side effects like nausea or dizziness may occur but usually pass quickly. If you're unsure, taking the pill can help prevent pregnancy.

If 11 days have passed since the date of the expected period but you have done the love deeds, it is a good idea to check whether you are pregnant. Irregular periods and being sexually active are among the most common signs of pregnancy. You can be pregnant if you haven't used a condom while you have sex. Pregnancy tests that you can do at home are an accurate method to find out. The tests reveal pregnancy hormones in your urine.