Hit to the stomach?

These past few weeks I've taken a couple hits to the stomach, at the fair I went in a blow up ball on water and landed flat on my stomach and have gone jetskiing and tubing with many bumps. Everyone tells me it's ok because the baby is so protected but I'm getting worried it's not. Is my baby ok? I'm 15 and this happened around 13-14 weeks. I have an appointment in 2 days and I can't wait to go, I'm so nervous.