Hello, I have recently lost my Virginity to my boyfriend( about 2 months ago) and since the last month I have had almost constant cystitis. The first time I went to the doctors they have me antibiotics as I had a water infection, and this cleared it up for a while. Then it came back a few days later, since then I have used the sachets you can buy at pharmacies and this helps short term however it is back in no time. I have taken ALL the precautions and drink lots of water, clean every night with no perfumed lotions, wear cotton underwear, urinate after sex. EVERYTHING. The last time I had sex was Sunday, 6 days and since then I have had cystius really bad. It goes away when I take sachets then as soon as the course is finished it returns, so now I'm afraid to have sex again. Please help me it is unbearable I cannot go out and cannot stop crying!