Hey there.
I know the feeling and can also only give you my promise that I'm also here to listen.

I feel guilty for reaching out, but it's crucial for me.
Think about it this way - every person has limits, and once those are reached, self care will kick in. Your friends are there to help, and will. When things get too much for them, they will look after themselves and put whatever measures in place. It's ok to ask for help - they'll also look after themselves