Pregnant shortly after miscarriage?

I've gotten 2 different doctors opinions on when to try again. One said wait 3 months, the other said to try whenever I want? I'm so confused. I miscarried 2 weeks ago and my numbers are at 0 now. TTC for 6 months since my last miscarriage a little over a year ago. Anybody know if it's bad to get pregnant before ur first period after a miscarriage.? Not wanting to wait too long and starting all over again I feel like I lost all this time:(  I just don't want to be careful anymore. Really wanting a baby?