Nimu should be avoided. But Ill suggest not to go for antibiotics also without doctor's advise. If it is less irritation, pl go for Turmeric
gargles and Turmeric/ Curcumin based oral medicine and Sitopaladi combos for curing it naturally and also enhancing immunity. Also take Oscimum extract or boil it in water and sip water. See in 2-3 days. Please contact if you need more info.