I'm so confused about my body ..

I have pregnacy symptoms all month ...which I never had EVER ! Sore breast peeing a lot , eating everything but the kitchen sink , back pains !! So I decided to take tests . I got bfns Then I started bleeding two days before my AF is really due then bled for 2 days (light bleeding) then it stopped my AF lasts for 5 days regularly .... I got bfns should I take another test or expect this as a short period ...?