Could this harm the baby?

I was babysitting and one of the kids hit me in the stomach. I’m 21 weeks and 4 days. It did hurt when he hit me and the pain lingered for a few minutes. I think I have felt the baby move since then but I haven’t been able to really relax and make sure. I’m really worried that this could’ve hurt the baby. I know to call the doctor if I don’t feel him move, but do I still need to call them if I do feel him move just to be safe? I just don’t want the baby to of been harmed.