COULD I BE PREGNANT?

Everyone please help me !!!!

I had my baby 3 months early in December. My first sign I was pregnant with her was my hair falling out. My hair has started falling out so I did a test and I swear I see the faintest line, it’s so faint I can’t take a pic but I’ve put it up against different lights and I swear I see it. Please see my log below. I had sex in my last fertile window but I then had a period? So surely I’m not pregnant am I just seeing things on the test? It would make me around 9 weeks pregnant if somehow I was, so if that was the case I’d have a dark pregnancy test line, right?!