My boyfriend and i tried waterbased lube when the condom went dry and i experienced burning. i have had a uti before but treated it. ?

I'm not quite sure: What your question is, but i'll give it a shot. You could have an allergy to latex, or to the common spermicides they put on condoms which could cause burning. Try different non-latex condoms which can be used with better silicone based lubes such as eros. To avoid uti's, pee asap after sex, and preferably do a quick "rinse off" in the shower with water or very gentle soap only. No baths!