Hello,
This cramping can be due to ovarian cysts or due to implantation of the egg as well especially when there is a history of unprotected intercourse. You can confirm it by getting your HCG levels checked by urine test or a blood test for pregnancy.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
It could be your period coming if you are not regular.