Lines getting lighter

Jasmine • 30/2🌈👼🏽👼🏽🤰🏾

I've been testing just to see line progression and it's been great up until this am my line is light than the day before yesterday (didn't test yesterday). Went and got my HCG levels check yesterday and they were 334.4. is this normal or should I be concerned? I'm scared asl.

First day

Second

Today