What is the likelihood of me being pregnant?

So today I noticed that I look a little bloated. I normally don’t get this bloated. I’ve been eating chips recently more so than normal and I think that has something to do with it. I have an IUD since December and for the first time I had unprotected sex April 30th but it didn’t last long and he never came. Ive been bleeding for a couple days but it’s brown and I think it’s due to my IUD because I’ve had random bleeding like this before. My period isn’t due for at least 12 days. I feel like I’m stressing myself out worrying over this. My boobs are a little sore but nothing crazy, I feel like I have to go to the bathroom (#2) more but again I don’t know if that’s because of me stressing over this and over analyzing everything.

Some advice would be greatly appreciated to relieve my overthinking, stressed out self.