People are getting my twitter notifications and dms on their iphones?

Ok so i broke my phone a while back and becaue i have nothing to check my twitter on i was using my friends phones and sighning in and then swipping the account when i was done to log out. Turns out that wasn't logging me out and they are getting All of my notifications even my DMS. They all tried deleting the app and re downloading and it still didn't work. And they said when they went to settings > twitter that my account @ wasn't there so they couldnt remove it

please help me or i will have to make a new twitter.

would changing my password help?

Added (1). BTW - all of them have iphones

Wait i just figured it out this website sucks