Hi Tam,
Here are a few recommendations to help your hurting hands:
1) Use 14 and/or 16 oz gloves in training.
2) On your off-days/times (i.e. whenever it comes to mind when you're not formally training), lightly hit a flat piece of iron or hardwood repeatedly for 20-60 second periods with your bare fists (incorporating both the two-knuckle landing - i.e. index and middle finger knuckles and three-knuckle landing - i.e. middle, ring, and pinkie finger knuckles).
3) After every training session, wash your hands in hot water (as hot as you can handle for 10-30 seconds, opening and closing them and rubbing them in all possible ways during the process). Afterwards, fully open and close your hands as wide and tightly as possible for 10-30 seconds. Repeat as desired (just don't overdo it).

Give these a shot for a month and let us know if they help.

Take Care,
Lito