Getting worried about these tests.

I took a test last night.  It was a very faded positive. I took two tests (same brand) this morning. Still very faded. Do you think it's just because it's super early in the pregnancy? I had a transvaginal ultrasound a few days ago for other reasons. I told her about my week late period. She said she'd be on the lookout for a baby. She said she didn't see one, but that it could be too early. They can't see a pregnancy until at least 5 weeks. She advised to to buy some HTPs.  Anyway, hereafter the ones from this morning. ​this is the one from last night. ​