Excited and scared to be pregnant

My fiancé and I have been on this pregnancy topic for a while. I finally took a test today and it’s positive!..... excited because finally, but I cried. I’m scared to go through a first time pregnancy or that something may go wrong or I’ll get my hopes up. I just can’t seem to get the negative thoughts out. I did have 1 miscarriage and 2 abortions in the past. Idk I just hope everything turns out for the better 😌.