Husband acting strange....

Since we are TTC my husband and I have been doing the BD as often as we can. Everything has been going great but more recently he has been complaining of discomfort and cringing with pain every time we start to have sex. I thought maybe at first it could be chafing or friction due to grown out hair or just having sex so much. But even after a fresh Brazilian wax and a couple days off from intercourse he is saying that entering me is "hurting his penis". Just wondering if anyone else's man has ever had something similar happen to them or if it may be him getting cold feet about us starting a family. Thoughts and opinions needed!! Thannkss 🙂