OK I was so excited when I got AF on 19/3 because I've only ever had a few before anyway and got pregnant on a fluke *yippee*

but then I got cramps again (I was assuming ovulation pains) on 5/4, then a bit of spotting on 12/4 and now nothing. No AF. Is this normal after baby? I'm not b/f and haven't been since 2 weeks so my body should be getting back to some sort of normal right?
I don't want to freak myself out and think that I'm pregnant as I only got a BFP at 6 weeks with Jack as I didn't have high levels of HCG. We have been using condoms but who knows? We did the deed 2 days before pains, it just seems that it all came at the right time?

So now I'm on CD33 and I think I'll wait till CD40 to test just in case. And then I freak out that if I'm pg, that because I just had an operation I'd have to abort cos of the general anaesthetic and the drugs etc?
Help put my mind at ease someone

Oh, and sorry didn't really know what thread to put this in. So has anyone else had this? I wouldn't care about not getting AF if it wasn't for the fact that I had the pain and then spotting (which I've never had before) and now everytime I get a little bit of pain I think OMG whats going on. TIA