The end of my humanity

"How long was I in this dimension? Weeks? Months? Years? Decades? It doesn't matter... only one entered the portal but I bet he left. as I am writing this on my diary I felt a sudden pain, I looked to see my legs changing into tentacles, I tried to quickly procure a potion to halt this transformation but I saw my hands turning into tentacles as well, I tried with all my might to hold on to the potion but the vial slipped and shattered onto the ground. With nothing to stop the process the only thing I could do was to try not to thrash about because of the pain" but that was easier said than done. My mind began to slip as I tried to control my new appendages, destroying my alchemy lab. The pain was so unbearable that I passed out. When I woke up I had no recollection of who I was or am, I floated up and looked around seeing my alchemy lab in ruin, I was scared and accidentally flew through a portal, the portal brought me back to town where a lot of the townsfolk were understandably frightened of my new form, confused I floated to the nearest river to see my reflection.