What should I do?

My baby girl got a vaccination on Wednesday and on Friday started getting fevers and now it's 103.7. I called the doctors Saturday morning and they said to wait till Monday but at that time she had only a fever of 102. I feel so bad for her. I took her out for some fresh air and to get food and I feel like I made it worse😔 I feel like such a bad mom rn. It's going down now slowly but she still feels really warm.