I'm a pregnant teen, and now living with my boyfriend and his family. His older sister really doesn't like me, considering she had a bad experience with her teen pregnancy. She is always putting me down, stealing from me, talking about me, etc. Everyone in the bathroom has their own private drawer to keep their bathroom things in. I keep my toothbrush in it, because I don't wanna keep it above the sink in the holder with the others because I don't wanna leave it out. It's a newer toothbrush, and I noticed the bristles are all flattened and spread out as though it was being used to scrub something. And for the past few days, whenever I brush my teeth my my burns and my tongue turns bright red. And it stings for awhile, there's been a dull sting on it all day. Do you think she could've scrubbed something with a product to clean something? (I haven't swallowed any of it, baby is healthy!)