The gums behind my front teeth got irritated while I was eating watermelon. The crunchy melon was rubbing against my gums. I had been eating watermelon for quite a few days as a detox. I finally stopped and started blending but by that time a lump had developed, somewhat large and about the width of two teeth. I have been doing oil pulling and rinsing with salt water for about 5 days. It does seem to be a tiny bit smaller today. Just wondering what it is and when it will go away.