Help 😬

Me and my child’s father were middle school sweethearts , We broke up in high school and went off separate ways until recently when we had a few fun nights and I ended up pregnant. Now that im pregnant I want absolutely nothing to do with him. Im so uncomfortable being around him. I honestly wish i didn’t have to be bothered with him. The problem is hes a great guy , doing everything he can to help , he’s super involved , he wants to be together but it’s a no from me. Has anyone ever felt this way about your childs father? I feel awful for feeling this way but i just want to be left alone when it comes to him.