Could I be pregnant???

Well, I don't know what to think. My husband and I want to have a baby. My last day on birth control was Sept. 19. My last period was Sept. 25. Today, I am 26 days late, 51 days off the pill and 53 days since my last period. I've been having some pretty strange feelings in the past couple months, just off and on things that I can't pinpoint if they are from my hormones being screwed up or what. I've take 4 tests in the past 26 days and they all come back negative. I haven't seen a doctor yet because I figure I'm screwed up from the pill. I wish I were pregnant and the tests were wrong....has anyone else experienced similar situation??? Please help!!