When is the right time?

Sasha • Been together 6 years ttc our first! ❤️
So I'm pretty  sure I'm pregnant, I was wondering when is the right time to do a home pregnancy test? When did you get a positive how many days after your missed period did you get your big fat positives? I tested 4days before my period and I think I got the faintest line ever but I'm worried I've just got line eyes 😫 
Also what where your very first symptoms and when did they happen?