Two months prior I found a new line of work as a clinical secretary for a bustling practice. I did quite well and received a pay increase soon. I enjoyed the work.

Searching for guidance

Two months prior I found a new line of work as a clinical secretary for a bustling practice. I did quite well and received a pay increase soon. I enjoyed the work.
Following a month, the Dr I work for began an extra practice (lawful cases) under an alternate name, separate programming framework, way more administrative work and comparable responsibility to what I had become used to. Since it's another training he has not employed any staff. I'm relied upon to deal with the two practices simultaneously now and I'm overpowered. My presentation is being condemned out of nowhere and I'm debilitated over it. I'm not permitted extra time.
Is this alright? I'm in Florida