I agree with the above post, meditation often helps one clear their head and can help with grounding to center yourself. You mentioned bad feelings from the body, are you experiencing pain? If pain is the case, it is always good to discuss with your medical professional, and then consider trying herbs or other means of relief depending on the pain.
If you have an overall sense of sadness that too is something to consider talking about with your medical professional. Depression is something develops over time and on-going untreated will get worse.
Since I don't know exactly what you feel bad about (sad, pain or overall just down in the dumps) I would suggest meditation, maybe try clearing yourself and your space with sage, its always a go-to for a fresh start. Try burning your favorite scent or incense, and I find making a rice bag (basically make a bag any shape or size and fill it with white rice) I will add some herbs like lavender, and microwave the bag for 30 seconds (up to 4 times, always 30 second intervals turning the bag) then rest the bag on you, I like shoulders and neck the most when meditating or relaxing. The heat is very therapeutic and the lavender is calming.
I hope some of this might help you start feeling better but if this persists, I would defiantly speak with someone, especially if its turning into a depressed state.
Take care and good luck!