Pregnancy tests now are able to detect as little as 25 mIU/mL of hCG. This is an itty-bitty amount. The best test out there seems to be the Target branded one that is just the | | for a positive not the + | line for a positive. The + | ones actually can fade away making you think that you're not pregnant and you really are. I don't know much about the digital ones, except that there was a recall on them a few months ago.
In my experience (I take tests monthly because of not being on any BC), I get lots of negatives... Of course, I am pregnant now and got positives like crazy.

I only took 6 tests over two weeks for this baby just to be sure since I habitually miscarry.
So, congrats! You're preggers. Make an OB appointment now, since they are going to want your bgs to be below 95 fasting and under 120 post-prandial.
