Your K1 visa expired on the day you used it to enter the US. K1 visas are one time use only. As long as you got married withing the 90 days of entering on the K1, you will be fine.
You can send in you change of address , but be extremely diligent in following up to be sure they update your file with the new one. Too many times we have heard of people sending in changes of address only to have their notices be sent the old address and missing important dates.
Domi Sanders reacted to Unlockable in Change of address- married, K1 expired, before AOS application