Is it normal to miss my old life and sort of wish we’d waited for baby?

I feel sick to my stomach being able to type that question, but I know this is a safe space. My husband and I are 26 and 28. We are really the only ones in our friend group that have babies, which I think is part of the reason I feel the way I do...We went through 1.5 years of fertility for our little guy. He is 3 months old. I’m the mom everyone hates because he’s been sleeping through the night (10pm-6am) since 1 month old. He’s a great eater (EBF), a very happy baby, never cries, etc. I should have not ONE single complaint, but I find myself feeling guilty and selfish because: I miss my old life where everything was easier to plan, to get up and go, etc., I miss one-on-one time with my husband, I miss staying up later on weekends, not being tied down because of breastfeeding/pumping.... again, I feel awful saying these things but it’s how I feel. BUT, I also feel that I couldnt love this little boy more even if I tried, that every smile and coo melts my heart, and that he is an absolute miracle that we tried very hard for. Are these normal feelings? I go through highs and lows... am I okay?