I HIGHLY doubt it from the bump. I fell on my stomach out of my son's bed which is quite high and everything was fine. Your baby is really padded in there and if you aren't experiencing any bleeding, your water didn't break, etc. it's probably OK. You can always call your doc. if you are uncomfortable. I have a 3 1/2 year old that kicks the heck out of me with his shoes and orthodics on every day and hits my belly pretty good sometimes and it's always been fine. They are very padded but call if it will make you feel better- no question is stupid when you are pregnant.
I am sure it is fine. If you are not feeling any pain, I am sure you and your baby are OK.
I'm worrying too cos I'm 35 week on Monday and my daughter who is 4 1/2 years old came running earlier to me whilst I was sat on setter and kneed me so hard in my stomach and since she did it at 5pm I've had nothing but pains no blood or anything either is my baby ok pls msg as worried.com