Hello, I’ve booked an appointment to treat my frown lines this Thursday, however I’m extremely nervous.I’m 35 years old. The first time I tried Botox was 10 years ago. After the injection I stood up and sat on a chair and then fainted. My heart rate dropped and I was given an oxygen mask until my heart rate increased. That night I had some difficulty eating, I felt as though I couldn’t swallow. The same thing happened the next night . Shall I try again?