Opinions Please

Dr. Told me earlier in the month I was most likely having a miscarriage because I Had a really low HCG and had some spotting, but he sent me for a second blood draw four days later just to see if my HCG was decreasing/increasing. Well it actually increased but did not double, so he sent me for a third draw two days later, again it did not double but was close, so he said he was optimistic it would be a normal pregnancy and just to wait two weeks and come back for an ultrasound. These two weeks are taking forever,but I have been taking tests to make sure I'm still pregnant. Does it look like the lines are getting darker to you? Does this mean my HCG is continuing to go up? Anyone else have really low HCG like me? According to glow I'm 7 weeks, my last AF started jan 4.