Questions after a misscarige!

Ok so I recently had a misscarige and after that I had an period from the 2nd of February to the 18th. I am usually a regular girl that usually starts around the 17th and lasts for 6 to 7 days. So by the app now my period was supposed to start the 2nd but it still hasn't started yet I took a pregnancy test on the 7th but it was negative also its not showing any ovulation not fertile days. My OBGYN told me to wait till I had my second period after the miscarriage to start trying but my husband and I didn't want to wait but now I'm confused and I don't know what to do. Please if anyone could help I would love it!