Hello, Sore tongue and gums may arise due to-aphthous ulcers. I would advice you to take plenty of water and fluids. Nutritious diet has to be taken. Vitamin becosules,c,supplements has to be administered. There may be plaque deposition in between your teeth. To remove this,I would suggest you to get your teeth cleaned. Use chlorhexidine mouthrinse to gargle. Hope this helps.