Baby hates being on belly

I’m starting to think that something might actually be wrong with my 6 month old. At first I thought it was normal behavior, some babies don’t like being on their belly I get it but she screams and cries as if she’s in pain when I put her on her stomach for tummy time and then she ALWAYS spits up after I pick her up. (I always wait about an hour after she eats) I’m going to bring it up with her doctor next week but I was wondering if anyone else went through this. She’s 6 months. She’s only rolled once from belly to back. She twists on her back but won’t roll on to her stomach. She can sit unassisted just fine. I’m worried she’ll never learn to crawl because she hates being on her stomach that much