Hello To You. For The Last Couple Of Months Or

Hello to you. For the last couple of months or more, my superior labial frenum is....pliable, noticeable, making an inprint/groove of it's shape in my lips. It is odd, not right.....I have asked chemists (tried nilstat?? a paste as well)...my dentist couldn't see anything....and I explained I can feel the groove with my tongue and the superior labial frenum is so pliable...strange. the gum portion where the s l f goes directly in between my middle front teeth is also different....My GP gave me a course of Amoxil (she was concerned possible infection as gums were very tender, again the front bit, inbetween my two front teeth would bleed slightly and very sore to brush. The tenderness has subsided, but .....any ideas what is going on before they send me on to an ENT...please