That's right, I am contaminated. I caught baby fever, and I have it B-A-D!!

It's ridiculous! I'm going nuts. My best friend is about to deliver any day now, and we BOTH thought I would be preggo first. Lol.
After DS#1
and after DD, I was ovulating 10 months PP. I even nursed DD until she self-weaned halfway through my second trimester with Zeke. I thought, after two kids, it would be exactly the same. But it hasn't been, unfortunately. Zeke is 16 months old now, still BFing happily, and I STILL am not ovulating.
I got pregnant so easily while BFing before, why can't I now? Zeke sleeps through the night(so no night nursing), he eats regular solid food meals, and recently starting drinking more cow milk when he's thirsty instead of mommy milk.
Okay...rant over.
Any tips or suggestions?