Regretting tubal ligation

My baby is 8 days old. I also have 3 more older children. But I decided to get my my tubes tied during my c section with my 8 day old. I keep looking at her and crying knowing I won't ever have a newborn again. IDK if it's just the hormones or if I legit made a mistake making the choice to tie my tubes. Will I ever get over the sadness? I feel like I've lost something and I know I can never have it back.