Chance of pregnancy or not?

hey girls 👋

I was a bit curious about something so my period has been late for now 20 days last time I had any kind of sexual activity was in November 6th... December I guess I had my period for 2 days but I wouldn’t even consider it my period it was super light and the latest it’s been before is a day or two and I don’t know if I should take the pregnancy test I’ve taken it so many times before and it comes out negative I’m not trying to get disappointed once again what should I do 😓 should k wait longer to see if I get it ? Should I take the test ? Should I go to the doctors?😓😓