I had my last sexual intercorse with my husband on July 28. The day before, I did an ovulation test, and it was positive. Starting August 10, I began experiencing nausea and very strong fatigue. The urine test was negative. On August 14 I had bleeding, but it did not look at al like my periods. It was much less blood and lasted only two days while during my normal periods I bleed for five days. I went to the family doctor and did blood test, but not the higly sensitive one, and it was negative. Since then, I am experiencing very strong nausea, but I do not vomit, constant fatigue, and I became very irritable. Couple of days ago I had bleeding, and again it was very moderate and lasted two days. Today I did a urine test again, and again it was negative. My question is: is there a posibility that I am pregnant?