Help❗️❗️❗️❗️

Hey everyone 😊I need help about three months ago I got diagnosed with a molar pregnancy and had the surgery to remove the grape like masses and was told I would get my period back to normal and not to have sex but my period hasn’t returned I know I’ve been sexually active but for two months almost going on three no period and every pregnancy test I take is negative does anyone have a clue what could be going on I don’t want to go to a hospital for nothing ...