It took me until my 50s to stop being self-conscious about my slender body and skinny arms. Exercising more helped a bit but it was mostly in my head. My advice - love yourself now! (The sign was for a Twitter pro-nudity campaign)
39F, 5’6”, 145lbs - Almost a year after my last child, breasts already starting to shrink as I lose milk and carrying all my weight on the bottom half.