Isekai Mahou Wa Okureteru!

Help any ideas ??? I have a sore swollen throat can't swallow looks red feels sore and not much space gap in throat plus I have a black tounge yes black ( and no its not black jacks beetroot etc I don't eat anything I can think that turn it) and all cracked swollen.. I have had bad tounge for over month but sudden swollen throat and sore do you think I need to see doctors?? I have hypothyrodism and thyroid glad feels sore swollen?? Low immune system. . But also my grandad died of esophagus cancer and I have past history of cancer ( not that this is) Any advice please xx sorry not good looking photos (up me nostrils lol) Isekai Mahou Wa Okureteru!