Struggling with mental health

Hi everyone- I am 7 weeks one day and for the last week I have been in a non stop cycle of panic,fear, isolation, depression. I have not been able to work for a week due to how severe these symptoms are, and have had constant nausea as well. I am seeing my doctor tomorrow for my first sonogram and the guilt of not being excited is killing me. I have GAD diagnosed years ago and am not on medication. I’m not sure what to do anymore and would really appreciate some feedback-thank you