3 wks. ive been exhausted. my stomach/lower abdomen is harder than normal. get sick from certain foods. gas bubbles. frequent urination. pregnancy?

Hard to guess: It can be hard to tell if a woman is pregnant because some of the symptoms seen in early pregnancy can also happen in non-pregnant women. A urine pregnancy test gives a reliable result if done correctly. Can test about 3 weeks after sex (3 weeks after when conception might have occurred), or 1 week after missing a period. If not pregnant, a doctor can evaluate any persistent or worrisome symptoms.