my bf and i were play fighting and i sat in a chair and he sat on my lap but then he went up and…

my bf and i were play fighting and i sat in a chair and he sat on my lap but then he went up and accidentally sat on my lower stomach and i yelped and he got up i think the baby will be okay but we are still worried what do you think? my stomach isnt really big yet i dont really look pregnant i just have a pooch i just turned 17 weeks... my next sonogram isnt for two weeks