I am a worrier

Does it ever stop? The worrying? I have been a nervous wreck - more so than usual - since I met my dog! First I was worried about her in the shelter and worried about whether I'd be able to take her home. Then I was worried about leaving her while I left for work. Then I was worried about leaving her alone downstairs while I was sleeping. Now I'm worried about taking her to the vet tomorrow. My stomach has had those nervous butterflies for more than two weeks now and I haven't been able to sleep much! I can't wait for things to start feeling normal. (Well normal for me at least!)