parents that battled infertility for a long time, did you regret having your baby?

So its a common feeling especially for FTM and FTF to feel this immediate regret in the few first weeks postpartum, and wonder "what the hell have i done.. did i make the right decision?" my sister and I gave birth to our babies 5 weeks apart, i got pregnant within 4 months of trying and she got pregnant within 7 years of trying. Im wondering if she ever felt the saw way i did shortly after delivery just out of curiosity and i wanna know how others felt!