How long to try again after Methotrexate?

Jolyne
18 days ago, I was 11 weeks pregnant but it turned out the pregnancy was cornual. I had to have a cornual resection and lost part of my left tube and part of my uterus. I also got the methotrexate shot to make sure everything cleared out. I have an appointment with my doctor on February 22 so I'll be asking him all these questions then but for right now I'm still going out of my mind wondering when I can start trying again. I know my situation is a bit different than most others because cornual pregnancies are really rare but just wanted to see if anyone knew how long you had to wait to start trying after the methotrexate shot and also after having an open surgery like a resection....thanks in advance, everyone!