I was on antibiotics and developed a yeast infection started monistat 3 and forgot the second night after I took it my boyfriend didn't even know unfortunately I'm worried he can get it from that and be giving it back to me because after I finished the last day I didn't itch or have any symptoms of a yeast infection at all and now after we had sex again I am itching so bad... I'm going to see my doctor as soon as I can get in there obviously but did I give him a yeast infection he can keep transmitting back and forth with me? No matter what should we both go to the doctor to prevent continuous yeast infections ?