big hugs to you. I know what it is like to have a long term illness and yes medications can play havok with intuition!
These things have helped me:
1. A raw vegan diet. Eating food in its natural state means that it has all its enzymes intact and is easier to digest. You don't have to go 100% (!) - just include lots more raw food in your diet. Unfortunately if it is in a bottle or a tin-can it is probably pasturaised and therefore many of the enzymes are denatured. There's tonnes of info on internet about it. Have a look at some kirlean photographs comparing raw and cooked food. I use Alissa Cohen's site a lot for info. I think Erin's said in her blog she was told to go vegan by her guides to raise her vibration.
2. Learning energy healing.
Quantum-Touch: The Power to Heal has information about a healing technique you can use to raise your vibrational energy. It's easy to learn and quick to do. (It is great to do with friends as a healing share).
3. Erin's chakra clearing exercise.
Erin Pavlina - Spiritual Wisdom for Conscious People » Blog Archive » Chakras
Aalso I found that becoming reiki attuned helped me stop absorbing everyone's emotions. (I used to cry if I touched some people as I would be overwhelmed by all their pain - not good! and I found myself swept from one extreme to the other by other people's moods.) As well as the reiki, I have spent the last few years determined to heal my emotional issues and have used EFT and other energy techniques with a healer to get to the root of the problem.
I'm sure other people will have lots of other ideas. They are the things that have helped me, so happy to answer any questions you might have about them.