Is it ok that 88 cent test is not as strong as frer?

I’m maybe 12-13 DPO and I’m getting positives but my cheapies are so faint it makes me nervous… should they be darker by now? My period is due in 2 days so idk if maybe it’s still just kinda early and I don’t have my first appt for another month. How do I know baby is growing okay and not to worry?

We’ve been trying for baby #2 since Feb 2021 and conceived on our very last medicated cycle (I was referred to infertility specialist for IUI/IVF the day before my positive). So it just seems too good to be true and my husband and I are scared to get excited yet 😓❤️🥺