Current FHA Par rates are at 5.75-5.875%...which you should get no higher than 6%.
Rates are scheduled to continue on going higher, and when the FED cuts the fed funds rate, then the rates will go up again.
Until then, you can follow the market at the link below.
There are more than one index that affects the bond market, but this is the best FREE internet resource I have found. We Subscribe to a Bond Market update saving our clients costly swings like those that happened in the last few weeks.
Most lenders ARE NOT willing to send the extra money for the service.
Best of luck to you & your fiance Eric.