for the last 2 weeks i have been feeling low on energy and tired. no matter how much sleep i have, it seems like its never enough. i went to my doctor yesterday as i passed out and was really shakey. at the doctors i had an ECG as my heart was beating very fast. the nurse that did it said my heart was jumping around a bit. after the doctor looked at my results from the ECG and said they were fine and my pulse was fine but my blood pressure was low but he wasnt worried about that as i am only a small woman and thats what he would expect. so i got no answers there and was just sent on my way. is there some way to get the old my back? the doctor also said that it could be viral but i have no sign of a cold ect...could i be working myself to hard? i am a mum of 2 girls age 5 and 8, plus im at college and learning to drive, but to me that dont seem like alot. any help on what could be wrong?

thanks for taking the time to read my mail.