Help! I think I'm pregnant

So I'm now 11 days late and on day 40 of my cycle. I took a test when I was 4 days late bc I'm never more than one or two days past the expected date for AF but that was negative, so I took another test at a week late and got another BFN. This is very irregular for me and me and my SO don't use any form of contraception. I've been having some symptoms of pregnancy; extremely tired, having to pee A LOT and even just always feeling like I have to go, light cramping on one side of my uterus, and extremely emotional. Should I wait until I'm at 14 days late and take another home test? Or should I call my doctor and ask for a blood test? I just don't know what to do at this point! Anything helps!