I have a very similar problem. I am 23 years old and started having sex at 16 as well. I have had 2 partners. I am very frustrated because I hadn't had sex in almost a year. I started seeing a guy recently and we engaged in some foreplay. He fingered me and soon after I got a yeast infection. Also just recently I slept with my most recent ex, and now I feel like I'm getting another yeast infection. I do remember in the past when we were dating that I was getting frequent yeast infections after having sex. I'm so frustrated and irritated because I feel like if I engage in ANY kind of sexual activity I end up getting a yeast infection. I have been tested for STD's and everything came out negative so I know I'm fine in that department. Although I was diagnosed with HPV when I was 19. I really need some advice and help from anyone who is knowledgable enough with this problem. Im tired of getting yeast infections they're uncomfortable, annoying, and expensive to treat with over the counter medicines!!!
If your partner HAS a yeast infection, then most definitely you could be contracting a yeast infection from him. Yeast infections aren't nearly as common in men as in women...have you asked him about it? He probably needs to go to his doctor, be diagnosed and treated if he has a yeast infection.
Have you been taking antibiotics? That is the #1 cause of a yeast infection in most women. If you have...then what may be happening is...YOU are the one with the infection, and the intercourse is exacerbating the symptoms for you.
Also, I hope since you are having unprotected sex with him, that you have both been mutually tested for STD's and that you are fairly confident in his devotion to you.
When in a monogamous relationship...BEFORE having unprotected sex, both parties should be tested together. Also, you are aware that you are placing him at risk for herpes, right? That is something you really need to think about. Even if you do not have a current outbreak, you still can pass the virus to him.
Do some thinking about your practices, just to ensure that you BOTH are being safe and protecting one anaother. Additionally....just be aware that if you are on oral contraceptives...it is always wise to use a condom as well. While incidents of pregnancy while on the pill aren't commonplace..it does happen. Trust me on this one. I was one of the 1%. I had been on the pill faithfully for over 10 years when out of the blue, I became pregnant with my daughter (this was 10 yrs ago). And, I was taking the pill 100% accurately...faithfully, never missing a dose...and hadn't been taking antibiotics, or anything that would have affected the efficacy of the oral contraceptive. Pretty much a HUGE shock, let me tell ya! She is now 10 and I'm blessed, but it certainly wasn't planned, and I was scared ****less at the time! ;0)
Just be smart when it comes to these types of decisions. You're talking about your health, and your future. Okay?
Wish you well.