I personally think so - those are how my lines looked around 15dpo. They kept getting darker, and right around 21dpo the test line was darker than the control line. I've had 2 early u/s - one at 6 weeks because of spotting, and then one at 7 weeks to make sure things were progressing. Both times we saw a bub with a little heartbeat! It was so exciting and shocking after my last pregnancy where we didn't see a baby or a heartbeat.
Hoping very much you get to see that this time around! When is your first ultrasound? Fingers crossed for you!