Strange period

So I was supposed to start my period sometime this past week. Thursday my SO and I had sex which I ended up bleeding after thinking iT was my period cause there was quite a bit of blood (sorry tmi) so got myself taken care of and later sent to change and no blood (which has happened before after sex so I wasn't worried at first.) Then friday I spotted very lightly all day And then Saturday morning I had a gush with small blood clots definitely thought it was my period took care of it later nothing no blood and still not so I'm kinda worried should I be ugh advice? What do you guys think?