irrational fears?

Yesterday I had 3 contractions. They were spread out over 3 hours. They weren't painful, and I possibly wouldn't have even known that they were contractions if I hadn't experienced them before. The fact that I'm only 28 weeks tomorrow only slightly terrifies me. It's way too early for this to start happening. Then I have been having some heart palpitations. It makes me kind if short of breath when it happens. And of course it's frightening when anything happens with your heart. I have read that it is fairly common in pregnancy due to the extra blood flow, but I do have an ob spot tomorrow so I will bring it up. When I had the second contraction yesterday I was at my mom's. I kinds just zoned out. I had this completely panicked feeling. I know part of it is due to lack of control. I have a type a personality. I have to be able to plan things. And I am realizing that once again laborious and delivery isn't going to be something I can plan. I don't want another long hospital stay. I don't want my baby to be in the nicu again. I have had a few fairly bad headaches in the past week. That scares me because I had a fee really good weeks. I don't want them to get out of control again. And then just the fact that I have all these things, plus more running through my head all the time makes me feel even more panicked and out if control.