Boo...

Feeling kind of down and needed to post somewhere.  I've had a feeling for a week and a half that I was pregnant (not the most scientific rationale I know), had crazy mood swings for a week, sore/firm breasts for about four days (I'm a 34 D normally so idk if I'd see any size change for a while), headaches/sensitivity to smell/food aversions and cravings off and on the last 4-5 days, and AF is due today.  Being obsessive I bought a pack of 50 Wondfo tests off amazon last week and have been taking them daily, and all have been bfns :(.  No AF yet today so I was hoping today would be the day id see a bfp, but no dice.  I've had some lower abdominal cramping the last couple days but it seemed different from pms cramps (more like when your muscles are sore from working out too long or something).  Just bummed and don't want to stress SO out about it, he even thinks I must be pregnant with all the weird things that have been popping up and I don't want to disappoint him :/.  I know people ask this all the time but has anyone had bfns when AF was due and gotten a BFP later?  How long did it take?  Did the test brand make a difference?  I've read a lot of different things about the Wondfos and I've definitely had at least 5 of that batch visibly defective already. Trying to stay optimistic about it and hoping it's not all psychological!  Anyway, thanks for reading and good luck to all of you, hoping for the best for everyone ttc!!