Halp- I need answers

At the moment my vagina (not within but the inside of the lips/labia) has been itchy, irritable, and have a light burning sensation- but not red. I've been taking restroom stops a lot, and I have this pushing sensation almost 24/7 whenever I do urinsye. My moods are fine and I've just had recent love making with my Bb, I asked him to see if there was any way any sperm could've got in, but he said not to worry bout it. I have very irregular periods, like a month or two without going with a period, sometimes they last from 4 days to a week, nothing more then a week n a half. Maybe the cause is from me soaking in the bath for over 30 minutes, not drinking enough water, etc. No cramps, headaches, anything out of ordinary, just constant stops to restroom. Any ideas? Thanks!!