Miscarriage Paranoia!

Last year on May 19th I miscarried at 7 weeks and 2 days. I woke up with "period like" bleeding and rushed myself to the ER before work to find out my that the fetal heart rate was very slow and my cervix was dilated.  I miscarried that night at home around 10pm. I was so heartbroken. This was just 2 days after I'd heard my baby's heartbeat for the first time. I had been trying to get pregnant for nearly a decade with no luck. I was convinced I wouldn't get pregnant again. 
Much to my surprise and delight, I just found out 2 weeks that  I am pregnant again! Today I am 7 weeks and 3 days. Ever since finding out I was pregnant again, I've suffered some extreme paranoia about miscarrying. Every time I feel any type of vaginal discharge I run to the bathroom to make sure it's not blood. I had a scare recently where I had slight bleeding after intercourse and I was an emotional wreck thinking that I was miscarrying again. I just feel that I'm so paranoid after having one miscarriage that it will happen again. I catch myself dreading to use the restroom because of fear of seeing blood...but I have the urge to check constantly out of fear. My first prenatal appointment is scheduled for 11/4. Has anyone else had similar experiences of debilitating miscarriage fear?