My heartbeat will randomly become irregular and pick up speed or do a huge beat and it will hurt or be uncomfortable for me and it always makes it hard to breathe. I also have had these periods of time where I feel like I m trying to do everything super fast but no matter how hard I try I feel like I m in slow motion. I ve dealt with these two things my whole childhood and haven t brought them up to anyone. I m 17 now and they still haven t gone away. Are they tied together and are they anything serious?