Hello. I actually have two questions and I'm not sure if they are related. The first is I have had two UTI's in the last 3 months. My husband and I had sex about 5 days before I thought my period should start, after I started bleeding - but then it stopped. Then Wednesday, we had sex again and the same thing happened, it lasted for about a day and a half. I thought for sure my period had started because I had back pain as well. To make matters worse, I seem to have contracted some sort of stomach bug as I have had sever diarrhea since last night, I vomited this morning and have had stomach pain. I just took some imodium about 20 min ago. I'm not sure if I need to see a doctor or if these issues are related.