Thanks for writing in.
As you provided the detail,it seems that there is a trauma because of fibres of mango in that area.
But you did not tell that whether you have swelling or not in that area.
I will suggest you please visit your dentist
as soon as possible for thorough examination,because few points are not clear with your provided detail as-
1.Do you have swelling in that area or not?
3.Ulceration in the same area?
4.Tearing of mucosa in the same area?
So please visit your dentist as soon as possible,and follow all the given instructions.
As you provided the detail it seems that it is a traumatic injury
to your gum mucosa,for this you can use mucopain.
Nothing to get worried.