Hm. I'm not sure what is going since you haven't had issues in the past with him. I think you need to schedule a pelvic exam with an ob/gyn and explain what is going on exactly. Please come back and tell us what they say and sorry this is causing even more stress for you!
Hormones are a finicky thing, changing constantly, something as simple as this could cause it to be more dry than usual in the area even if It doesn't seem like it. Always be sure to use some lubricant! There is also the chance of tearing in the area, especially when the area is dry. I always suggest to see your doctor with things like this, especially when it's interfering with your life. Try not to worry until you get into the doctors office, there's a million things it could be but it's more than likely nothing serious. Test out some lubricants, try different positions, and be sure to have a lot of foreplay beforehand so your body is less tense :)