Bleeding after Sex

So me and my boyfriend had sex about 2 days after my cycle. We had sex 3 times but after the 1st he had blood on his t-shirt wasn't dark but a light color but it was quite a bit! I clean myself up a little and we had sex again he did not pull out at all but I have IUD. Also I am sore I think may be ripped a little or cut bc toward the bottom insertion area it stings when I pee.Since then I have been leaking a light yellow color and I'm assuming clear bc in my undies it just looks wet like I peed a little. A strange smell but not fishy. Just wondering if it's just leftover

ver waste and blood coming out and hoping I'm not pregnant..it is due for my IUD to be removed so this worries me a little. What do u ladies think? Have u had sex right after your period??