Longer cycles after miscarriage?

I had a d&c for a miscarriage at 11wks on 11th Jan this year.

I got AF on 12th Feb. Pretty textbook....heavy for a few days, then light etc...I dont care if I ovulated or not on that cycle, coz we wanted to wait 1 cycle before TTC again.

So, im now on CD34 and still no AF. And no BFP either!! We BD'd heaps around CD14-17 coz I had my first +ve OPK. Then I got some EWCM on CD21, so we BD again. And on CD22 I got a super-dark +ve OPK and this continued til CD26!!! They were so dark!

Anyway....so I either ovulated on CD16 or CD22. So today is either 18DPO or 12DPO. So I dont know why I keep getting BFN's?....The first cycle after m/c was only 33days...

I was a very regular 30day cycle before the m/c. Has anyone had their cycles get longer and longer after a m/c? Or can explain why my OPKs were so dark for 6 days?

Hearing you, my last cycle (2nd since m/c) was a week longer, and I thought I either O'd on day 14 or 21, got AF on day 35, so that backs up O'ing on day 21. I read that sometimes your body gears up for O but then drops back again. No clue how long this cycle is going to be, hoping it's closer to normal for me! The usual, but unsatisfactory answer, is that after m/c anything can happen, and it's normal. Sucks doesn't it?