Help😬😬

My period was 6 days late and I started spotting on and off on day one it was heavier than now. Day two I barely bled at all maybe a couple drops when I peed here and there. I could wear one pad for all day. and it wouldn’t be filled..And this is TMI. But I was having sex today with my boyfriend and I noticed the blood was pink brown color and that’s never happened to me before.. ever. I saw some specs of bright red here and there but dark for sure. Usually mines bright red and he said it could just be mixed with discharge or other fluids lol. Which is reasonable. my periods are turning irregular. I haven’t noticed any cramping but I’ve been prone to head aches lately. Could someone reassure me that I’m not freaking out for no reason ?