Low platelets

Melody
Hello, has anyone had low platelets before prior to pregnancy. My Dr referred me to a hematologist. Dr in the a.m. I'm kinda nervous because I'm thinking I may have leukemia but I'm praying about it and putting it in god's hands. With my 1st born had low Platletsand I had to get a c section and go completely under. My OB already told me most likely I'd have to go under with this one. .... I just hope I'm a really bad enemic and that's all. . Any advice ?