How many BFN's did you get before your BFP? And how many weeks were you when you got it?

I think I'm pregnant..got all the symptoms. Exhausted, nauseated, heartburn, frequent urination, cramping. I have a really irregular cycle and I think I might've conceived the day after my period. (11-28) Which would make me around 4 weeks if I am...I have taken 2 dollar tree tests yesterday and today with BFN results. Is this still considered too early or are my symptoms more of a sign then the tests? SHARE YOUR STORIES..Need the support. :)