Advice/opinions please?

So I'm 10 dpo. On 8 dpo i got a faint on a frer (within time frame and pink) and on 9 dpo I got faints on walmart cheapie test. Ive had many faints 8/9dpo but this morning I barely have a shadow of a line. Last night I did have a huge fountain drink before bed. I went to sleep at 2am and woke at 6:15am to pee and again at 1030am to pee. Would the peeing they the night and the drink effect the line color? Has anyone ever Gotten faints and then lighter lines but then they get darker and u were pregnant? I'm feeling pretty depressed as this was the last cycle I'm trying because of uncontrollable circumstances.