I am an overweight mother of two and live in a two story apartment. For months now when I walk up the stairs or the distance of one block, I get nauseated and have to dry heave. I have to stop to catch my breath also. I was diagnosed with asthma and anemia. Could the anemia have something to do with the loss of strength during walking and causing me to get nauseous? Most of the time, my inside wants to go faster than what my body will allow. Do you think I may be over exerting myself?