I had sex in December 7...took two tests during that month and came out negative. and then got my period on January 11 had it for two weeks, then stopped for 6 days and then got my period again and it’s lasted for 25 days... ive finally got kind of concerned and looked it up... they said it either a medical issue or I’m pregnant...idk what to do or think and I’m a little worried. PLS SOMEONE I NEED SOME ADVICE!