Wow, ur bf is a total jerk. He is the one who gave u an std in the first place and he is gonna dump u for the stupid sh*t he did? Screw that mfr. Why would he leave u for the c**p he did? If y'all are really serious then he needs to stop being immature. And yes he picked up an std from her for sure. Just bacterial though. It is curable with antibiotics. Just stop fooling around until you both finish your courses of antibiotics.....and I mean u both need to take the antibiotics for it. I got one when i was a mid teen and yeah it burns when u pee badly and it is so uncomfortable down there. I'm sorry he did that to u. That's why ppl should always use condoms even if they don't like to. Some stds like hiv have no symptoms and u never know who has it and the person may not know he even has it. And sometimes it won't show up in bloodwork till six months after u have been exposed to it. If the guy doesn't want to use a condom then don't even mess with him. Don't let guys talk u into not using one. That's stupid and risky. And some stds u can catch even with condoms like herpes. He could have herpes around his penis or balls and a condom can't cover the whole area and it only takes just skin to skin contact to catch herpes. And if he has a cold sore, do not let him eat u out. You will catch herpes downstairs from that.
Well if she had been a good girl she wouldn't be getting bucked without insisting on a casual partner to put a bag on it. Why women don't absolutely insist on bag on or no sex is beyond me because the new condoms of our era are so sensitive it feels like skin on skin contact anyway so why let him bare leg it plus let him cum I side of you? Dirty girl no sympathy and before someone says let's hope it never happens to me well it won't I am safe even with my partner of nearly 30 years if she misses a pill through illness ill put a condom on full stop in fact I have been known to put 3 on when banging dirt bags after a night out just to keep myself safe. No bare leg for me only protective sex unless with my girlfriend or my regular dogging partner
Some of the most common and less serious reasons: your period is coming soon/has ended, you have shaved/trimmed/or waxed in the last 2-3 weeks (hair is growing back), change in detergent, underwear is irritating the sensitive skin, etc.
Other options range from UTI's, infection, and STD/STI's.
Advice: shower and wash with unscented soap, vagisil can help w irritation/itching regardless of the reason, wear cotton underwear, try not to scratch, etc.
If the itching lasts more than 2-3 days... see your doctor. Could be something simple. If you wait too long it could become more serious.