Am I pregnant ?

Hi guys about two days ago I started bleeding me and my boyfriend have been trying for a baby , the bleeding is weird not like my period it stops and comes sometimes it’s light pink sometimes it’s dark red sometimes brownish comes in waves it’s mostly watery not really cloty , it’s accompanied by cramps I also have some nausea . When should I take a test after the bleeding or is it fine to take now ? , has anyone experienced bleeding more than spotting but less than a period ?? Could this be implantation bleeding ? This would be my first pregnancy please help