Hi. the past two days i have felt really tired, stomach aches, nausea thursday and this morning. loss of appetite and headaches?

Infection?Pregnant?: What you describe could be the beginning of a viral syndrome that later could involve the respiratory system, An intestinal viral or bacterial infection could cause your problem as well. Pregnancy is a possibility and should be ruled out before taking any medication. You can go to the pharmacy and get a pregnancy test kit. You should go and see a physician for full diagnosis and treatment.