Very yellow.....

Whenever I wipe, it leaves a little bit of yellow on the paper. My pee is also usually super yellow. I drink a lot of water, going through 3 bottles a day right now because of a sore throat, but my pee is still yellow and leaving this yellow on the paper. I'm 10 weeks, I've seen the doctor once at 7 weeks 4 days. She never said anything about a UTI, I did take medication for a bacterial infection at around 5 weeks. This yellow thing has been going on since the very beginning. I've heard it could be from prenatals? Anyone know or experiencing something similar?