Second cycle after childbirth, CD 39,19 DPO, no AF

Wondering if anyone has been or is in a similar situation.
I finally got a period Jan. 4 since giving birth 16 months earlier (I breasfeed my daughter still hence the long time)
It was completely normal in every aspect in that it was exactly like the old days, every day of it was just like it used to be. So I figured everything was back in order.
I followed closely in the days after my AF and found that I ovulated around CD 21, I had all of the appropriate ovulation symptoms and positive opk.

Here is where it gets strange: shortly after ovulation I had two weeks of menstrual cramping, severe bloating, and very creamy cm, the cramps have dissipated now but gas, bloating and cm still remain and now I'm on CD 39 with only negative HPTs.

Before I got pregnant my AF was always consistent with a cycle of 31 days like clockwork and since every other part of my period this time was like the old days I assumed that my cycle would be as well which would make me 6 days late.

What are others' experiences getting back into their cycles after pregnancy or during breastfeeding? Is any one else this late or experiencing these kinds of symptoms? Is there a chance I may still be pregnant and it's still to early to know for sure?
And why on earth would I have so much CM after ovulating and for such a long length of time?

Getting very confused!