I was experiencing heart palpitations prior to removal and after as well. I've had it out for 7 weeks and I had my first major panic attack last week. Overall, I think my anxiety level has improved though. All I can say is it's normal and will get better with time. The process is different for everybody. Some of my side effects have gone away completely. I think others are a little more stubborn and it takes a lot more time for them to go. I think it's definitely possible to experience new "pop-up" symptoms as the chemical is leaving your body and your hormones are working to readjust. Take care and keep us posted on your progress.