I did the same at around 6 weeks but I flew of my bike n landed straight on my stomach well the front of my body n it was quite hard n they said asking as your not bleeding it should be alright but if your worried it's always better to be seen to ease your mind
Anytime you fall you should call your OB and see what they say. Often times they want you to be seen
You might want to call and ask your doctor. But this early in pregnancy the baby is still so tiny that its below your pubic bone and quite protected from any stomach trauma.
am sure ure ok,wld hv been terrible if u were already far gone,but still go get checked out,u might be given some pain relievers