Get some corticosteroid creams.
I think its a allergic reaction to high grass
These can be due to insect bites but if they are very itchy then scabies needs to be ruled out. You should change the bed linen, your clothes and wash them in hot water and dry them in sun. You can also use medicated soaps as well for bathing. Personal hygiene is needed.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.