HELP on/off bleeding postpartum

I had a c-section two months ago, and i’ve had two full periods since then. My second period since i’ve had a c-section ended about a week ago but today i started bleeding again. It was more of a mucus blood/jelly. Is it normal to bleed on and off so randomly especially after two months or is it something i should be worried about? Maybe it’s implantation bleeding? I had unprotected sex twice during my period, once during the middle and once on the very last day. He didn’t finish inside of me but maybe the precum?? I’m just worried. Thanks everyone!