My pulse is usually anywhere from 66 to 73 most days and in the last few days its been at rest 75 to 84 .I am not sure why the difference but was wondering if its important?I haven't felt like I could breathe very good for the last week or so but I also had a 66 pulse when I couldn't breathe as well.The weather has been a little warmer than usual and wondering if this could be it?