Pregnancy

So I’ve been going back and fourth on posting this but I need advice..

I’m 12days late for my period and I’ve had lower back pain, random times of nausea throughout the day when I get hungry, bad mood swings, a lot of white milky discharge ( sorry if tmi lol) ,and I’m constantly exhausted no matter how much sleep I’m getting. I see a super faint line and I don’t know if I’m imagining it because I want it to be there. Shouldn’t it be darker because I’m so late? Never in my life have I been more than 4-5 days late. HELP!