<s>[INST] ive been feeling very nauseaus, my breast are tender, i have headaches and back pain, i feel the need to pee really bad but i only go a little bit, everytime i smoke a cigarette i feel sick, my emotions have changed, fatigued, i also get period like cramps but it leads to diaherra or constipation. I have not missed my period yet but i have taken a pregnancy test that came back negative. Can i be pregnant? [/INST] Hi dear, I have gone through your question and understand your concerns.The symptoms you have described are present in early pregnancy.However, urine pregnancy test gives a confirmatory result only once you miss the periods.I will suggest you to repeat a urine pregnancy test if you miss the periods.Hope you found the answer helpful.Wishing you good health.Dr Deepti Verma </s>