I feel like I'm at the end of my rope and it's fraying

This is the first time I've ever posted my own thread in a 7 Cups community forum. I hope I'm doing it right.

I'm really struggling this week. I've had to expend so much effort managing my emotions and I'm exhausted and I just don't have the energy to do it right now. I just got off the phone with my eye doctor's office. They called to cancel and told me they were rescheduling for a time a few weeks from now and it's not the end of the world, but because I'm at the end of all my coping strategies, it feels that way. If someone needs to call to reschedule an appointment, they should ask what times might work for you and be apologetic, not just inform you that they won't be keeping the appointment you made 8 months ago and rearranged your life to get to, with a totally unsympathetic receptionist who says that it doesn't matter if you didn't get the appointment reminder card and no, they don't get people in earlier due to cancellations because they use the cancellations for emergencies so you can take it or leave it while you ration your contact lenses.

In this case, my eye doctor had a death in her family, and that's understandable. But she also canceled/rescheduled in 2023 at the last minute because my appointment was on Halloween and she decided to take her kids trick-or-treating. So I'm not feeling very good about my eye doctor but also I have a hard time dealing with new things and I'm at the end of my rope so I booked the appointment for now, even though I don't know if I can keep it.

Another doctor of mine broke his leg and texted me a mere hour before (when I should have been heading toward his office) to say he was practicing telemedicine for a while (he's known this for weeks so not letting me know earlier seems weird), and I had an appointment with him last night that was awful; I won't go into the details of that but suffice it to say I'm not coping with sudden changes well.

These are little things among the big things I won't detail. These are not the things that have me unable to function and sobbing in my kitchen. I don't know how to feel better anymore. I wish I did. I really want to feel better.