Jackie STOP TESTING!!!!
We know you're concerned about a mc but for real, you can stop theres no need anymore. You may be using cheapies but you still had to pay for them and now they're being wasted when you're clearly pregnant. You've got the progression its not a chemical so now relax until you actually have something to worry about like bleeding or pain or heavy cramping. Until then, congrats and again R-E-L-A-X.
Not to sound rude, truly, but some gals are going on months and years of trying and you're "disappointed" in your lines? Common girl, be happy with the awesomeness that you have in your lines and whats ahead with your pregnancy.
xo.