Cramps after Conceiving?

Has anyone had mild cramps hours after sex and ended up becoming pregnant? I ovulated yesterday and I never feel cramps after sex. I only experience cramps during the second day of my period. So this is a little unusual for me. I wasn’t actively trying to get pregnant. Ive tried google but I couldnt find a good direct answer as to why i may be crampy. Also the sex was not rough.