Completely freaked out.

I've been planning on having a baby by the time I was 30, and I'm 5 weeks 3 days. But now I feel guilty because even though It was planned I'm completely terrified. I can't stop thinking about loosing my freedom and of all the things I won't be able to do anymore when the baby is born like travel, being able to do things on my own, etc. Has anyone else been feeling like this and if so how did you cope?