Visible gestational sac but empty no yolk sac or embryo at 5 weeks? Has anyone else experienced this?
5 weeks is right on the edge of whether or not a pregnancy is visible on ultrasound, so your scan doesn't have to mean anything. And both mild cramping and some minor spotting can occur in a healthy pregnancy at this stage. I second the advice to get a second quantitative blood test 2-3 days after the first. 14 days is a very long time to live not knowing whether it's going to be okay. Your current hCG levels are fine for 5 weeks, but the important information is whether or not they double in roughly 48-72 hours.
5 weeks is still really, really early, and your hCG is within the normal range for being 5 weeks. I know this is frustrating and it's impossible not to worry, but 2 weeks can make all the difference in seeing virtually nothing vs being able to see a viable embryo with a heartbeat. Also, cramping in early pregnancy is normal, and spotting and even light bleeding is not uncommon. What I would suggest is getting another quantitative hCG test in 48-72 hours after the first one you had. If your hCG at least doubles during that period, that is a good sign. Your OB can probably order the test for you, or if you want to pay out of pocket you can go to a place like AnyLabTestNow and get it done yourself. Just makes sure you get a *quantitative* test. A qualitative hCG test will only tell you yes or no, but what you want is the actual number.