am i the only one?

So I previously had 3 miscarriages and am now on my fourth pregnancy... am I the only one that has had more than a few miscarriages that has like no hope of a future successful pregnancy? The doctors literally told me after doing bloodwork that nothing is wrong, yet I can't stop trying to prepare myself for the worst. I guess it's just my anxiety getting to me. Someone please convince me that I can have hope with this little bean! I'm trying not to stress but it's a lot easier said than done!