You got lost in a random forest not knowing where you are, you rested against a tree

Most of the wood was old and rotten, there were swamps and then grass was dark green

Suddenly you feel something crawling up your arm as you see you were about to scream but it already crawled into your mouth you chocke a bit as it crawled down your throat into your stomach it rests in a corner of your stomach enjoying the warmth and the heat of your stomach acid. Before it entered you saw it was a red glob, it seemed slimy, had about 4 tentacles and mouth with sharp teeth and a red eye inside.