You may have just lost weight ike your husband suggested. I was getting terrible saddle sores about 2 years ago when I was riding more mileage. I thought it was my saddle but it wasn't. I had lost weight and my shorts now didn't fit. I bought new shorts and didn't have a problem.
I don't know anything about knickers because of weather where I ride. It's pretty much always too warm. If you liked the PI chamois at one point, I would start there. Get a pair and give it a shot but go down a size. They also could have stretched but I would try on one size smaller. My best guess is that you have lost some weight and they don't fit the same.
***proud Hoosier, statistics nerd, and mom to a headstrong toddler***
****one car family and loving it!****
Owned by:
Le Monstre Vert - 2013 Surly Cross-check
Chessie, Scottish Terrier
Bonzai, Catahoula Leopard Dog