Hello! I Have A Two Year Old Baby And Looking

Hello! I have a two year old baby and looking for te second one. So i've been testing since 4 days ago and today is september 10th and my period due is the 19th, on the first test i seen i vary faint line and i read the results before the 5 mins indicated on the box. The second one was still fain but it was more visible and the 3rd one yesterday that one was clear and today the line was still faint but is like everyday the test line gets a lil but darker n it has color on it also. I've been feeling like pain on my lower stomach the same pain i felt with my first baby and another thing is that i've been noticing a lot of white discharge. 1. My question is can i be pregnant even though the test lines are faint ? 2. Should i wait for my period due. 3. Does these symptoms have anything to do with pregnancy ?. Thank you .