Any advice on what comes after?

I (20F) have been taking care of my grandparents, specifically my Grandmother (82) for basically the last 5 years. My grandmother has Alzheimer's, and is on hospice. I don't imagine she'll make it through this week.

My Grandfather (84) and I were very close, but he passed away two months ago, so my mom and I moved in to care for my Grandmother full time. It's just so crazy to think that it'll all be over. So much of my life has been wrapped up in caring for them, and I just don't know what to do moving forward.

I'm hoping to go to college to study nursing.