hoping not to get AF

elena

since my last sex day was the 20th and i started ovulating on the 19th but two days after sex i starting feeling sick cramping twinges in between my thighs. ive never had that feeling before has anyone?? i had back pain thats there all day a dull feeling feeling hot dizzy.please tell me possible implatation ? anyone felt the same? my period is soppose to be here on the 5th .