On saturday during doing some cleaning work in bathroom I suddenly started feeling palpitations I drank water and laid down but of no use after 15 minutes I called ambulance my heart rate was around 250 at that time after giving oxygen in ambulance I became normal but still heart rate was 140. They admitted me in a hospital and all reports ecg echo n xray are normal. I suffer from hypo thyroid and take 25 mg daily. I used to feed my 2 year old and I am a working lady. My age is 34.