I Have Had Enough

I'm taking care of my mom who has Parkinson's and other health problems, and it's starting to get to me. The other day I tried to take her, my grandmom and son to lunch and she blacked out in the parking lot. I knew there were no cars, it's not a busy place... But I dropped my son's hand to run back to her. He's 5 and doesn't want to listen to anything and she was right there, so I ran back. I don't want to make choices like this though. I feel so bad for her. And I feel bad for my son as it's hard on him too. I just feel BAD 😔