I noticed red bumps under my tongue with something stuck on my throat. What is the reason?

Hi doctor,

I am 38 years old with a weight of 152.12 lb and a height of 5 feet 7 inches tall. Before six months, I had a severe dry cough and it got better within a week. I did not take any medicine for it. I also had some ulcers in my mouth and it also got resolved within a week. At that time, I noticed some small red bumps on the back of my tongue. I did not consult anyone due to this pandemic. It has been six months now and I still have it in the same size and it has not reduced or increased in size. I am attaching the picture and please go through it. For the past six months, I feel like something is stuck in my throat. During early morning, I feel good and when I start eating something, I feel it and I have less pain inside the throat. Sometimes, I have irritation also. Earlier, I used to have this feeling and I gargle my mouth with salt water. After that, it gets reduced. But for the past two months, it is causing irritation in me. I have lost 17.64 lb and I used to maintain 158.73 lb. I went down to 138.89 lb and I am back with 152.12 lb now. I avoid eating nonvegetarian foods and chilies in the food. I am taking pepper instead of it. I am drinking coconut milk once in three days to reduce the wounds. I am a nonsmoker and I do not have the habit of alcohol drinking. I need your help for these two issues. Please help.