I'm new here.. Ive been having some issues going on and I would just love some advice if anyone has been through this. I've been experiencing fast heart rate, no energy, lightheadedness, shaky, tiredness, headaches and nausea at times. This dobt happen all the time but i have more than one of these symptoms on a daily basis and on a bad day I experience all of them and I'm done for the day. I feel like I'm going crazy with this. Please help!