It seems that you might having some allergy
due to something bite like mosqutos or bed bugs.
As you got this allergy after getting up, possibilty of having bed bugs are likely.
Many a time this type of allergy might be due to worm infestation.
Go for one deworming medicine course.
Continue Lortine few days more.
Keep your beds and clothes clean and observe for any type of insects there.
Ok and take care.