i initially had an ulcer on my left palatoglossal fold in the back of my mouth throat this has grown over the last 5 weeks is painless and has corroded the skin, i also have a lump on the right side of my throat . i am a 31 year old male who is 13 stone. recently had a bacterial infection,  severe fever, chills,weakness,and chest infection lost around 10llbs received 12 day course of antibiotics. feel better however still weak.
Hello there, I am Chat Doctor. See you have infection, so you are feeling weak, it takes usually 3-7 days to fully recover from the infection weakness. I think you have a lump and ulcer in your mouth so you haven't taken necessary diet. And during illness our metabolic rate is also increased, so we need to increase our energy level that is deprived because of your mouth condition. Now I suggest you to take some high fiber, green leafy veg and high protein content diet. And visit your physician once to ask for any extra tablet form supplemental vitamins & minerals are needed or not. Hope I have given appropriate guidance to you. If you have any query you can consult me anytime. Give me star rating and helpful vote & thank you according to your satisfaction level. Thanking you.