Wanting to give up

Has anyone ever felt like they just want to give up being a mom? My daughter is almost 8 months old and I keep thinking that one day she will be in school, do sports or whatever she wants to do, have boy problems, go to college ect and I don’t feel like I’m ready for that even though it’s years down the road. I have this fear in the back of my head that won’t go away. I do sometimes have regrets on getting pregnant. I got pregnant form a one night stand so I’m a single mom. I LOVE my daughter like I’m obsessed with her tiny little soul and would lose my mind if I didn’t have her and I feel extremely terrible even thinking of these thoughts but there is this grey area right above my head that just appeared and I feel stuck. Please no negative comments, they will be ignored.