Any advice please?

I'm new to trying to convince this is our 2 month trying. I am 11dpo I tested at 9 and 10 because I read online some women got BFP around that time. I've gotten nothing but negatives yes I know it could've been to soon for me. Anyways regardless I've been having some back aches and I get dizzy and very tired out of no where. Could be nothing but I'm feeling a lot of different things. When should I test again? Has anyone ever got a BFP after many negatives?