In 17y, I have had 4 dr's and (except for one) I was able to reach them by phone and get an appointment as needed, even if my regular appt was a month away. At the very beginning, I was frustrated finding a dr I liked, would work w/me, and would let me call or come in when needed. So, I kept looking. But, when you are at your worst, that's the last thing you want to be doing.
Considering how you are feeling and no one is available to help right now, UP YOUR MEDS.