Its very common for the thyroid to not function normally after rads. For me it was several years after rads when I first began needing thyroid meds. Im 7.5 years post rads and 5.5 years since my last bout of OC. I get my thyroid levels checked a few times ayear.

When you go to get checked out, ask your doc to also check for anemia. Thats pretty common as well. Its probably best to have a full blood panel done to check everything. Post rads, it can take the body a couple years to regulate itself to its new normal. Men should also have their testosterone levels checked.

Good luck!!!

Christine
SCC 6/15/07 L chk & by L molar both Stag I, age44
2x cispltn-35 IMRT end 9/27/07
-65 lbs in 2 mo, no caregvr
Clear PET 1/08
4/4/08 recur L chk Stag I
surg 4/16/08 clr marg
215 HBO dives
3/09 teeth out, trismus
7/2/09 recur, Stg IV
8/24/09 trach, ND, mandiblctmy
3wks medicly inducd coma
2 mo xtended hospital stay, ICU & burn unit
PICC line IV antibx 8 mo
10/4/10, 2/14/11 reconst surg
OC 3x in 3 years
very happy to be alive smile