Thank you all for the replies! My family ended up talking me into going to the hospital to be checked. I can't see a doctor and be covered by our insurance, but emergency is covered (at least partially - I'm scared of receiving a crazy bill). I'm a bit over 6 weeks, according to when my last period was, but I'm 5 weeks 1 day according to the ultrasound. My periods aren't regular, though.
My HCG level is close to 12000, but the ultrasound showed a gestational sac, a questionable yolk sac, and no fetal pole. Not a good sign, but nothing is known for sure. I go back in the morning to have blood drawn to see if my HCG has doubled. Even if it has, it can still be a blighted ovum, where my HCG rises, but the baby has stopped growing. I hate that even if I get good news tomorrow about my HCG, I still won't know if we've essentially already lost the baby.
Google is certainly my worst enemy right now - I keep caving in to searches and then stop myself shortly after. I'm the type that researches everything to death, so it's really hard not to stay off the computer.