You should get a proper care and assessment by a gynecologist toward your condition; firstly, get a pregnancy
diagnosed properly and if it is negative, go for other work up for hormonal
imbalance and other problems. Since both the ultrasound
and the blood test
are negative the chances of a continuing pregnancy are almost nil. You should assert the proper cause of your bleeding and plan properly for future conception. Avoid severe exercise in a pregnancy. Wish you good health.