Unbalanced pH! Tips??

So i've noticed my discharge has changed and I know it because my pH is off. Me and my boyfriend have been having sex without protection and it has thrown it off completely. He brought it up to me the other night. He was like "I think your pH might be off cause something doesn't seem right". Of course that made me a little self conscious but I'm glad he told me and I know he wasn't trying to hurt my feelings, he was just looking out for me and making sure I stay healthy. However, I would rather not have to take another trip to the OBYGN so if anyone has an tips or tricks to get it back on track then that would be great!!!!