Karen, welcome to OCF! At this point you are very early in the recovery mode so your sense of taste still has lots of time to recover. It can take up to 2 full years for some people to completely bounce back from radiation treatments. During that time you will still need to push for at least 2500 calories every single day and at least 48 oz of water. Since you are so tiny, you may try to take in even more to help you recover. I would also suggest picking up some high protein whey powder. Its available at any drug store. It mixes easily in water or any liquid and will help you to heal faster. here is a list of easy to eat foods, it might help with some different food ideas which are easier to eat.

East to Eat Foods List

Best wishes with your continued recovery!!