MC nightmares

Dee • My rainbow baby is due in Aug 2015 <3
I haven't had these in months and now being pregnant again they are back and more terrifying then ever. They feel so real and when I wake up I feel like it really happened and I have to run to the bathroom to see if I'm bleeding. I hate living in constant fear of loosing another pregnacy. Any tips on how to get rid of all the negative feelings and thoughts? I try so hard to go through the day and not think of the worst but only the best but when I fall asleep my mind goes crazy.