That's nothing! My parents have had some plants for about 20 years and never changed their soil, used chemical fertilizer probably only once. A lemon, a tangerine, a medlar, an olive tree - and they're still growing some fruit every year! Plants are amazing.
Thank you for your advice! I'll try and repot it tomorrow, hopefully I won't accidentally tear off the mangled stems...
And to be fair, my lily stopped blossoming after the first couple years. It was never in any particoularly dark spots though, I think it gets the light it needs. This one with the stem problem is the one I keep in the darkest room, although right infront of the window. It has grown to face it, but the leaves are still green & growing so I'm not worried about that. :P
Also, last thing... if I do find perlite/pumice, how should I go about it? Do I mix it with the regular soil? Is there a proportion I need to keep in mind, or can a google search help me with what I need to know? I never used any of that. Thank you!