The last 3 days or so I have noticed a strong smell in my urine. My boyfriend and I have just started experimenting with anal sex in the last week, we have had it maybe 3 or 4 times and I was wondering if that may have anything to do with it, because I've heard that penetration from anally and then vaginally can cause bacterial infections which may cause a strong odor in urine??? help? I'm confused??