The first time my boyfriend and I used petroleum jelly, a day later I got a yeast infection, we figured it was just a coincidience but didn't use it for a while after that. Then, a few days ago we used it again and the next morning, I had a UTI. I know that petroleum jelly is supposed to be safe for lubricant but I'm worried it is what's causing these and I'm not willing to try it again. Does anyone else have this problem with petroleum jelly? Also, are there any good lubricants I could use that WOULDN'T cause an infecetion?