You wouldn't have hormone levels if you were just ovulating. If you're talking about hCG, your body wouldn't be producing it at 2 weeks pregnant because it wouldn't even be pregnant yet. The egg would only just be fertilized and it would be traveling down your fallopian tube - it wouldn't even be in your uterus yet. Your body would NOT be making the hormone.
If they were talking about 2 weeks gestation, that's 4 weeks pregnant. That's the point where you first miss your period. At 4 weeks along, there's nothing to see on ultrasound just yet. The egg is too small to be seen. The earliest a pregnancy can usually be detected via ultrasound is around 5 weeks - and all they would see is a sac, not a baby.
Your hormone levels should be detectable via urine or blood test by now, and your hCG levels should be doubling. The fact that they're hovering around the 20's and 30's is troubling. It's very possible that your doctors are doing the wait-and-see approach to see if you miscarry or if maybe you're not as far along as they thought.