is it most likely AF?!?

Rebecca • 27, TTC my second baby. I love my husband for giving me baby #1 who is the most amazing gift in the world!!

I had a positive OPK on CD14, but then on CD20 I had positive OPKs 5 days in a row, my temps are all out of whack so I can't actually confirm when I ovulated. I'm on CD32 and this morning when I went toilet I had a tiny bit of pink spotting on toilet paper, I put a pad on and I haven't had anything since, I've been cramping a lot all day :-( I don't normally cramp even when AF is here. Is it most likely AF on her way? Or could it be IB?