Within the context of the situation with your grandma and with how concerned you are about her, there is nothing weird about your recent experience.
At least I don't think it's weird at all.

I realize you have been under a lot of stress. You have done amazingly well making sure your grandma is as safe and as well as she can be.
I think you are an amazing person so be so concerned and so devoted to her welfare. It's all Love in Action! You are showing how you feel about her with all you do!

I feel that many experiences you have are truly not "weird" at all. They might feel unusual; yet, they may totally make sense according to whatever is going on in your life!??

Keep on being Amazing!!!