Worried, idk

I'm not sure what's going on, I went to pee and noticed my urine was dark like kinda bloody looking, it wasn't bloody the past two hours when I had to pee tho. This has happened two days in a row and it happens during random times, I stay hydrated, drinking water all day, so I know it can't be dark from dehydration. Idk if I'm loosing my mucus plug or what, because there is no residue on the toilet paper besides regular discharge when I wipe. I dont believe it's a UTI because I dont have any of those symptoms and like I mentioned earlier, this happens randomly through the day. I have been having pretty intense braxton hicks but my urine doesn't appear anything but clearish yellow during these periods. Can anyone tell me what might be happening?? Idk of maybe my cervix is thinning, a mucus plug is being lost, or what?!?! I'm 36 weeks btw.