Pregnancy test

Can someone help me, I’m extremely paranoid but why on the bottom test is much much darker than the rest?? I know it’s dried in. The top one was taken today and the other 2 were taking couple days from each other. Is it normal for HCG to drop then rise again?

Or is all of this normal? I’m still getting pregnancy symptoms such as achy boobs, nausea etc

Someone tell me I’m just overthinking everything 😣😣😣