Welcome to Beyond Blue and well done for reaching out.
Sorry to hear of the anxiety you are experiencing at the moment. It it most certainly a very challenging time at the minute. I personally am quite thankful that forums like this exist; it means we can still get help and support from the safety of our own homes.
Perhaps it might pay to see your doctor again, and tell him or her about the Nausea? And if the doctor doesn't seem to explain things enough, sometimes it even helps to have a chat with the chemist where you got the script from; sometimes they will give more information about side effects, than the doctor will, and maybe able to suggest something about how to manage the side effects. And you don't generally need to make an appointment with the chemist either. You can just walk straight in there and talk to them immediately.
In the meantime, it might also pay to download a meditation and/or relaxation app to your phone, and practice keeping your mind in the here and now, and on the 'what IS' rather than focusing on the 'what ifs'.
Perhaps your work hours will increase again once all this is over? I do hope so.
In the meantime, we are all here for you and with you, for as much support as you need, and that I/we are able to give.
Take care. I'll be thinking of you. xo