Anxiety attacks :(

I'm just really having a bad night. I have bad anxiety and depression. I take medicine for it but my dosage needs increased because being on it for 2 years now my body isn't responding to it. I gag and dry heave and it's scary. It's social anxiety because it happens when I go somewhere or think abo it going somewhere. The medicine (zoloft) worked perfectly and made me myself again but now I'm back to old ways. It's so scary and hard to talk about :( I had a really bad attack at work tonight and played it off as I was sick for fear of embarrasment or people thinking I'm completely crazy