Separating And Divorcing?

Looking to see what I should do here (Michigan)

My wife recently decided she didn’t want to try to make our marriage work. This pretty much came out of no where to me so I’m totally just not in the head space to even remotely think right. I still would, but it takes two willing people to do that.

We have been living in our house (2020) since before we were married (2021). It was COVID times and things were just starting to get crazy, so she signed the papers for the house while I was at work. Her name is still the only one on any house papers and she has paid the mortgage bills. I have paid most of the other bills (gas, city, etc) and our bank accounts are all separate. I still have student loans and have been taking those on, which is why she has been paying for the mortgage (it all pretty much evened out).

I’m not sure if we’re at the stage where divorce is for sure (it has been a little over a week since I learned we had problems). I do know she is apparently miserable with me around, so I wanted to give her space by getting an apartment.

I am however, fearing that if I leave, I lose all rights to the house (if I even had any to begin with). Should I stay in the house and possibly make things worse even though I am sleeping in a different room and haven’t really interacted with her? Is getting a lawyer my next steps, regardless of whether we are just separating or actually divorcing?

Regardless, I have decided that I’ll be paying half the mortgage while living in the house. I’m hoping, if nothing else, this helps my case when I do have to leave. Just means paying less on student loans and eliminating paying for anything remotely unnecessary.

I’m totally lost on so many levels and any advice would be welcome.