Hi I have had this feeling up the side of my head like a pump (not often comes and goes) .. and ive had it in my arms and legs I am over weight but im on a diet and im exersing on a bike I also have a preasure feeling in the top front of my head I am 17 6 ft 3 and I am 19-20 stone could it be blood preasure if so does it offer any instant risks or am I okay to exersse still wants to do around 20 miles a day so want to clear this up sorry if this is in the wrong area.