Trying again

I stopped by birth control end of may and by the end of August I found out I was pregnant. We were trying so we were ecstatic; however, October 3rd I started bleeding and October 4th I had a miscarriage.. my question is for those who have miscarried, how did you know when to start trying again? And how did you shake the fear of it happening again? My doctor said to wait 2-3 cycles and I'm ok with that since I'm scared it'll happen again... any advice would be greatly appreciated...