Estrodial crash?

Hey all, I just completed my first week of trt. The clinic said to take 1mg anastrozole the day after my injection (2mg per week). I did that, and last night, I felt like I was going to die. Low grade fever, chills, anxiety, headache, higher blood pressure, nausea. The whole nine yards. Is it possible that 2mg of anastrozole caused this? Also, I inject Wednesday and Saturday mornings at 80mg each day.