Mom guilt

Has anyone had really bad mom guilt? This is my second baby. My first is a 3 1/2 year old little girl. She has been my world from day one. I had her while I was going through a rough divorce so we both really need each other. Her father has never been in the picture and so I have played both parts up until a year again when I meet this wonderful man. He is amazing and we are both so blessed to have him in our lives. She loves him so much but will always be a mom’s girl! When we told her we where having a baby she was so excited and could not wait. She still is so excited but also is having a harder time with me dropping her off at school. Today she cried harder then she ever has before and she is getting upset more. I know it’s hard to tell with her age. It’s so hard for me to physically to things with her that i use to like carry her. This breaks my heart for her. I know she will love her baby sister but I don’t want her to feel like she is not important or special to me anymore! 😭😭😭😭