I know its too much information but there is a really bad odor and I think coming from my anus. It started a couple of days ago after I had anal sex. Its the first time I've ever done it and ever since I've been getting this weird stench down there. And it lingers after I use the restroom. The smell is very bad. I cant explain it but its not something you can miss.. It only stings when I pee. Is this normal or is there something wrong?