In so much pain

Sl

I’m 33 weeks and Saturday I started having pains in my stomach that were so bad I went to the hospital. That doctor says it’s heartburn, so I wait and try to talk to my doctor Monday and they tell me there is a stomach bug going around that causes bad abdominal pain and I did feel sick yesterday. Today the pain has spread to my lower back. Anyone else have this? The doctors aren’t going to be any help apparently and I’m in so much pain.