Line too faint at 15dpo

Hi ladies!

I have PCOS and we were supposed to start trying for baby number 2 next month with letrozole and timed intercourse.

However, we had unprotected sex earlier this month and I took a test yesterday afternoon after realizing I hadn’t had an PMS symptoms. I got a faint line!

So I tested this morning with FMU and another faint line. I wasn’t worried about the faint line yesterday because I tested randomly in the afternoon but I expected a stronger line this morning at 15dpo.

Pic: 14dpo in afternoon on left and 15dpo FMU on right.

I called our fertility clinic this morning and they won’t test hcg levels since we conceived naturally 😑

Should I be worried?