period acting crazy or did I need to see a dr

I had a normal period for me... I started Saturday and ended Monday about noon

we had sex that night and bam I started bleeding again ( this has never happen before... ) then it stopped about 6am the next morning filled up about/2 a tampon...

we had sex last nught... but this time it was brighter and more pink... I even saw a baby blood clot....

I was just diagnosed with pcos and hypothyroidism but I am not on any meds for it yet I go to gynecological on the 17th...

its kinda scaring me tbh... ive never had this happen before