Miscarriage? help!!

So i went to the hospital on Sunday for some bleeding but it stopped right away. They took my blood and hcg levels were at 300. Doctor said he didnt really have an answer for me since my levels were good but they could only see the sac. He told me i either miscarried or its too early to see the baby. I really which to still be pregnant. I took a pregnancy test today and it came back really relly faint compared to when i first took a test. I dont get my levels checked till the 8th so was just wondering if anyone has gone through this and what were the results. Please help me!!!