I need advice.

So I’ve liked for a while and honestly I wasn’t going to do anything about it(In a past conversation, I admitted that I ‘had’ a crush on her and to my surprise she said she did as well. Yesterday I asked her out and she said yes. But, now I regret it. Its been awkward between us and I have all of these doubts over what will happen. I don’t know how I can explain it to her. I don’t want to hurt her. Has anyone else felt like this before?