I feel dishonest and I really hate it,
Would you feel dishonest if you had to cancel plans because of not feeling well? feeling well isnt just physical health but also mental health. if you are too exhausted to have conversations, you probably need some rest from social situations. Would you go to this social thing if you had a headache?
Dont take my words as the thing that will 100% work for you, im writing this based on what works for me and each person has diffrent needs.
I wish you to feel better soon OP