I really feel the need to rant! It is CD 13 and no signs of ovulating!!

Last cycle my fertility monitor showed that i O'd around CD 10 or 11, which is early for me. Normally I O on CD 13 or 14. Right now there are no signs of me Oing!!! I am sooo frustrated.
Also, I just went to dinner with a friend and I can't help but wonder if she is pregnant again. Her baby just turned 1 and she told me before that she wasn't going back on the pill because they didn't want to wait too long before they had another. I am sooo paranoid, but her belly looked big- which I know she still has some belly left over from her pregnancy... but it looked bigger. I don't know if she would tell me if she was pregnant because she knows what I have been through. Plus, I feel like she was avoiding me. It doesn't help that I hardly ever see her and i think part of it has to do with the fact that I don't have kids... I can't have cute little play dates with her. Of course I could be tottaly wrong but I am just so darn sad today and all I want is a baby.
Plus, my EDD would have been April 19 and I keep thinking that I should be bringing a baby home soon. And there are sooo many pregnant girls around me at work!! Do they even know how fortunate they are??? Do they know how much I would give to be in their place??? I just wish God would give me a baby

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Sorry to be soo down. I have been trying to be positive but the whole not Oing thing has got me really frustrated!