Inferior labial a swelling. Tooth?

I have been observing this dark spot in my buccal mucosa since 4-5 weeks, its not healing. I have my wisdom tooth extraction on friday. Leaving this apart i have another condition that the dentist is avoiding, swelling of artery in right buccal mucosa, in lower lips a thin line swelling is there, beside lips as well as to the lower mandible, its swelled but not visible, its like when you touch and palpate then you know, is it any fungal infection? Today my lower lips was painful for a while when i licked it a very thin thread like feeing is there and its pulsating. I believe its Inferior labial a, please correct me if wrong.. I am on rebagen, montek lc and lycostar course by an ent.. Is it happening cause of any infection or wisdom tooth? But wisdom tooth is far away. Please help me, m really worried as this didn't get addressed by my dentist.. The white lines are there where i can feel the swelling and the white on teeth is actually below the teeth on the lower buccal mucosa..