It's certainly a possibility that you need to make your doctor aware of. You should be able to test in about two weeks- but may take a little more time to get a positive (sometimes it takes a few days after a late period to show up)- so just keep your doctor informed of what is going on and what is possible before they run any tests, do x-rays, and proceed with the surgery.
Even if one unprotected report doesn't mean you got pregnant, a pregnancy cannot be ruled out 100% if you had unprotected sex et your partner ejaculated inside. I would mention that to my doctor especially now you have operations coming up in order to control for a pregnancy. You can also take a pregnancy test on you own the first day if you skip your period.