Are you also spotting or getting a brown discharge?
Are the cramps now as severe as they are during your periods?
Are you on any hormonal contraceptive like birth control pills or Nuvaring?
Didi you get a normal period after you had sex?
Cramping of the uterus occurs when it is trying to expel something - during the periods, it is trying to expel blood and tissues.
There are some possible conditions you could be suffering:
- You are pregnant and starting to miscarry. Light period after sex could be due to implantation bleeding. If you have not done any pregnancy tests, please do one now. Even if the pregnancy tests come negative, please consult an ob-gyn for an ultrasound of the uterus. A missed abortion or a blighted ovum can give a negative pregnancy test.
- You have an uterine polyp. The uterus will cramp in an attempt to expel the polyp. Here too, you need an ultrasound of the uterus.
- You could be going through ovulation. Since the cramping started 10 days after your period, it is the right time for ovulation. But although ovulation can cause some amount of cramping, it typically causes a dull ache on one side of the abdomen and sometimes spotting with vaginal discharge.
Cramping which is severe enough to cause nausea needs to be evaluated as early as possible. Please consult an ob-gyn.
I hope this helps. Let me know if you need more input.