I see my boyfriend about once a month as we have a LDR. Last couple of times I have been on my period. I visited him this past weekend and again had my period at this time. It was actually quite late as it is nomally 25-29 days between each month (last time I had my period being the last time I saw him and had sex) . I initially thought I was prenant and took 2 pregnancy tests prior to it arriving. I travelved to see him this past weekend thinking I may still be pregnant and would go to Doctor as soon as I got back to get an official test. During my visit I noticied an odor and waterery discharge, I then began bleeding aslo with a terrible odor. The last time I had sex with him was more than a month prior to this and was also on my period. I have not had sex with anyone else but him for the past 6 - 7 months and have never had this issue. He thinks that since the period was late and that the infection came about on the day I saw him again, that I was permiscuous withsomeone else in between. I am thinking it was due to the fact that I had sex with him while on period a month prior and putting tampons in and out sometimes inserting before a proper shower but he does not agree. I have an appointment with my gyno next week as to wait until my period is over but he will not understand that this is a common issue among most women and that I must have been doing something in between the last time I had sex with him and this time to have gotten a transmitted disease from someone else to cause this infection. Can you please provide some insight on How long you could have obtained a vaginal infection prior to seeing symptoms?