<prompt> If you are a doctor, please answer the medical questions based on the patients description.i have been feeling sick to my stomach for 2 weeks now,having headaches back aches leg pains and likeing pickles alot more than ever and wanting to just sleep. I have taken a pregnancy test but it was negative but i have 2 more weeks to go before my next period and i just started smokeing what should i do?  <response>: Hi. Thanks for your query. Stop smoking as the first part of the treatment. The cause of the pain in the stomach-feeling sick in the stomach and headache along with other symptoms of backache, leg pains, and feeling sleepy can be a general problem like enteric fever, or such infection. Get investigations of the blood : for CBC, thyroid, tidal, sugar, urea and creatinine... Ultrasonography of the abdomen and X-ray of the chest. A general and clinical examination by the Physician can help to get a clinical diagnosis and get a proper treatment. 