1st AF following Miscarriage

Jessica
My first AF following my 2nd miscarriage and 1st D&C on 1-25-17 came today. I am relieved that my Cycle is getting back on track and anxious to start trying again. However our OB/GYN told us to wait until April to start ttc again as she wants to check me for a blood clotting disorder, hormone and chromosome issues first. Anyone else here have to wait and have tests like this done first before ttc again after a loss?