My period is 5 months late I've taken several pregnancy test and they all come out negative im losing weight and have no symptoms can I still be pregnant?

5 months late. Hi are you regularly using birth control, i would assume you are not, because of your concern for pregnancy. Weight loss especially fast can itself cause lack of menstrual period. Stress and over exercising can also a woman's menses to cease. If. A woman's bodyfat is too low; it becomes more likely she will have irregular menses or none at all. Please see your physician for a complete eval.
See an md. There are several other explanations for what may be occuring. You are overly focused on pregnancy and are not considering alternative explanations. You absolutely, positively have to see a physician.