HELP! So nervous about this - line eyes 🙏🏼

We’ve been trying for 18m, have never been able to conceive on our own besides two past chemicals that I lost either the day of expected period or 5days after a missed period.

I got a clear negative on 4/10, had spotting on 4/12 and then a positive test the day of expected period, 4/14! The digital said yes, every test I’ve taken since is positive, my HCG is 33.3 4/14. I got back in Monday to make sure it’s doubling.

The only confusion I have is that my tests lines don’t seem to be darkening…. I’ve had issue with false positive/faint pink indent evap lines with the first response tests in the past and all these are from the same box so I’m wondering if it’s a weird box? If I’ve just been drinking too much water, if I caught it really early or what but I’m really hoping and praying that this baby is healthy and growing and these tests are just weird. With my first 4years ago my lines got darker by the day but I was also taking fertility meds to get pregnant and never had my HCG checked so it’s hard to know if this is my normal or not you know?

Top two are 4/14, middle 4/15, bottom two today.

This was my first test ever Below, very faint so I’ve definitely had some line progression but feel like maybe it should be darkening more???

Please share your advice/experience/etc. I’ve had no more bleeding or spotting since 4/12. I feel pregnant like I did with my first, I am having a lot more cramping/aches but I carry in my back and with r not being my first pregnancy I feel like my body is jump starting the pregnancy cause I feel like I already have a bump and my pants are already tighter 🙃