On the fence

I suffered a m/c twice in the last year. I'm 34 with 2 kids, 17 and 11 but I want one more. I've heard crap like "why are you starting over" and "you're crazy for trying again after this long". Since the 2nd m/c earlier this month, I'm not so sure I wanna try again but don't really want to prevent it from happening and my heart truly wants another baby. So lost and confused on what to do.