I feel weel & my whole body body ache ,have some uncel in my mouth ..after 1 week they gone automatically & wake up again ,,,,,pls help me ?

VIRAL INFECTION: SOUNDS LIKE YOU HAD A VIRAL INFECTION, POSS HERPES OUTBRAKE GIVEN THE MOUTH ULCER. REST, EAT WELL SHOULD GET BETTER.

Generalized pain: Generalized pain with feeling weak is a very vague symptoms. Needs more information about your symptoms. If it is of short duration could be from some viral syndrome, if it is a chronic symptom needs physical exam and some laboratory testings to arrive at a diagnosis. It could be connective tissue disorder, polymyalgia rheumatica, fibromyalgia, underlying anemia etc.

Ulcers: Most common cause of recurrent mouth ulcers are aphthous ulcers, which are self limiting. Next time ulcers appear have them examined by your Dentist. Recurrent ulcers have many possible causes, but you have to be examined to be properly diagnosed.