I am about 4 to 5 weeks pregnant i've been bleeding for a week already. i have no cramps nor blood clots . i went to the doctors yesturday and was told there was an egg sac but they couldn't see anything inside of it. the doctor told me i may be too early

Correct!: This early in pregnancy makes it difficult to discern whether it is a developing fetus in the egg sac or a "blighted ovum" of a possible miscarrriage. The "tincture of time" will tell the difference. Be patient as mother nature works on her own schedule.

Agree with Dr. I: You may get blood test for HCG level and repeat it in 2-3 days. In a healthy pregnancy HCG levels should double every 2 days or so.