Good evening fans🥰

Please could someone help me out

This my first post here.

I had my period on November 30th and I made out from 14th December to 21 but been feeling sick and under my tummy have been painful if I try to stretch myself so hard… sometimes am having a feeling as if my period is coming out but it’s not yet time for it and I have been feeling sometimes sick,frequent in urine and stomach cramps I did a pregnant test with urine it was Negative… could it be sign of pregnancy? Or something else?