Chances of miscarriage after 12 weeks?

Kimberly
Hey everyone. I had a miscarriage last April and as of today I am 13 weeks. I had a healthy scan at 11+6 (pretty much 12weeks) baby was moving heartbeat was strong everything was great. But my symptoms are slowly going away and im so scared that I might still miscarry.... I know it might sound crazy but I'm so worried that when I go to my next appointment on the 14th there won't be a heartbeat. To put my mind at ease, What are the chances of miscarriage after a healthy 12 week scan??