Pregnant

Me and my boyfriend started trying September 1st to have a baby. That was the ending of my ovulation it says on the internet. We have been doing it unprotected every since then, I have been cramping since September 4th. I was supposed to start my period September 11th, My period is 18 days late now. I have this white discharge that comes out kind of a lot, my boobs hurt, bloated, mood swings, nausea, all that. I took a test September 15, the line was very faint and after that till this day it has been nothing but negatives. Could I be taking it at the wrong times? I also got blood work done and it says negative. Could I just be too early to do anything and still need time for everything to take place to take another? Could blood work sometimes be wrong? I looked it up and some people say it. I just feel pregnant or it’s happening because I’m so late.😬