how long can it take to fall?

Someone once told me you can fall quicker after a loss?
Does that mean your cycle can be different? or ovulation times different? I've had 2 AF's since our sad loss. We lsot our bub 2 months ago, i was 16 weeks.28 days later AF came.
Then 28 days after that AF came again.
We've been given the all clear to try again as the test results were inconclusive, so they reckon it shouldn't happen again. I'm really scared and anxious. We got pregnant pretty easily with all 3 pregnancy's.

I think it so different for everyone,Iwas told it was easy after loss because of hormones,and if a d&c was nessecary that is supposed to help with trying again as well.Hope your time comes soon.I've been trying for 9 months but I've also been diagnosed with pre-menopause.