Hello Duhgluss,
When I saw you had unscrewed it 3 turns my heart sank as, just like George, I agree with our Bob and Clockboy.
There is always a chance we are wrong but basically parts will probably have dropped out of position on the dial side and are fouling the pathway for the stem and you can't resolve without dial removal.
You will need to take off the hands after protecting the dial with a thin bit of plastic or paper cut to fit under the hands on top of the dial which means you would need the tools to release the dial (normally held on by two screws that hold on to two prongs on the dial back), Presto hand puller or the like and presser to put them back on plus appropriately sized screwdrivers (not too big or small). You will get everything but the screwdriver for about £6.00 if you get the cheaper Indian or Chinese makes.
There is a load of stuff on the tube about the process involved and our Mark has covered it in general on some of his videos.
This was the second watch I ever worked on and it was quite easy so its up to you but I would give it a try, just make sure to take pics every time before and after you remove something.
Here is some info that may help.
4256_Tissot 2031,2037.pdf
Tissot 2031 Manual.pdf
Cheers,
Vic