S.H.
Each woman is different.. .per weight gain/loss before and after pregnancy. Also, yes, the knuckle swells/grows. That happened to me. But my Hubby got me a new ring about 1 year later!
My knuckles never went back to its normal size... nor my feet. After my first pregnancy, my feet grew. Then with my 2nd pregnancy... it grew a tad more. Both my fingers nor feet ever went back to its "original" pre-pregnancy size.
But that is just me and my case.
All the best,
Susan