Re: are these forms correct?
In the right context -- a new, temporary, and pressing situation -- even the first one could work.
I am so stuck on this problem. I am thinking about it all day. I'm even dreaming about it at night.It's been almost two weeks, and I still can't come up with the solution!
All this "thining" is new, it's temporary, it's current, and it's urgent. In this conext, the present progressive works.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.