The day after with my boyfriend cramping in lower stomach?

the day i had with my boyfriend was the day after my period stop. we didnt have ruff we made love. he came in me twice. once again i was not on my period having cause thats jus nasty.... but any ways two days later im experices these cramps in my lower stomach like off and on to the point the are sharp. they where comeing every 5mins 5 times in a role now the gon and i was jus wondering have anybody experice this before. i dont have any stds or uti or cyst on my ovriares i jus got tested for that 4 days before my period started. what do u think it could be could i be pregant. im ready to start a family but not too much in a rush.. last month i found out that my ovulation was thrown off and i ovulated right after my period due to stress normally it comes days after my period do u think i ovulated again the same way