Red blood spotting and clots 2 days after sex

I had sex on Sunday and today it is Tuesday and I took a shower and noticed that I had red blood clots and spotting. I am really worried as I asked my boyfriend did he pre cum and he said no and he also put on a condom afterwards when he felt like he was about to cum. I know he didnt cum in me as he did use a condom. But why am I getting red blood clots and light red blood spotting for? I am really worried😥😥