Good evng sir/madam, I am a 5months pregnant lady with very good health reports, but from last two days I am feeling very weak n feeling problem while breathing,it feels as if the weight of my heart got increased,also my energy levels are  getting decreased which pertains me to fell down with blurred vision.these all symptoms are observed aftr cooking or aftr dng any work for long time.since last month I am suffering from backache which is on right side of spinal cord.it hurts me a lot while dng certain work. Kindly tell me the reason for these problems.is these r because of dng work or any other reason.