It looks like it to me, congrats! Have you got another test?
Try not to worry. With my current pg I had awful anxiety because even on day of af I still had faint lines and they took ages to get darker (and same as you I had fainter lines with fmu on occasion). I had ICs which were great with my first pg but really awful for faint lines this time round. I only got a dark line about a week after af was due on a cheapie. Remember HCG fluctuates. Can you get a frer or cb digi today? When is af due?