Help please!!!😐

Okay so I'm 5 days late for AF so far. Yesterday Morning I took a test (top picture) and there is no doubt in my mind that is my BFP! but I took one this morning and it's also a BFP(I hope) because the line is there and showed up right away, but why is it so faint today and BOLD yesterday? Help!!!! I was super excited yesterday but today's test made me pretty unsure! (The first was probably my 2nd or 3rd pee of the day, the second one is my very first pee)