heartburn at 9.5 weeks!?

Lauren
So I am 9.5 weeks and I've been experiencing heart burn everyday for the last week. No matter what I eat. I won't eat anything acidic and I still get it. All I had this morning was some cereal and milk and I have heart burn. I'm a FTM. is this normal so early? Is there anything other than tums that I can take or do?? 
TIA