Why is my bfp test still faint

Sweetsexycupcake

The first pic was done on the 11th of oct and i took a test with the same one on the 10th of oct it wasnt showing up at all

The second pic the bottom one was done on the 10th oct but i was cramping so bad went to the er they said i was boardline i has jus goten pregnant and my hcg was 25 so the top pic i took on the 11th it got a lil darkee not much

The last pic was done on today the 12th of oct and u can see the line better then the 1st pic and they from the same store dollar tree.

Plz help me what should i do my af day is sunday the 13th oct But last month i had my af on the 14th of september why my line still faint or it look good now am not cramping as bad like i was have for the last couple of days thanks