Finally after a 1.5 years of trying got a BFP but a little worried

Jessica

I have been trying for a year and a half and after going to a clinic to help with infertility and removing some polyps I had I got my first BFP! The first test is 11DPO, the second test is 12DPO, and the third test is 13DPO. I’m nervous because the third test looks a little bit lighter than the second test. I know my urine could have been a little diluted as well as it’s a little different of a test but has anyone had this and then still had a normal pregnancy?