Grief and your cycle

Brittni
I recently (very suddenly and unexpectedly) lost my father. Before he died my cycle was always exactly 29 days. Now it ranges anywhere from 35-40 days. We have been TTC for only 2 months now and I feel like I won't be able to get pregnant until my cycle goes back to normal. Any ideas how long this will last? I know everyone is different, just looking to get an idea.. Our family could really use some good news soon..