Implantation?

Today I started to get a dull/mild cramp on my right side that lasted about 45 minutes followed by light pink/brown bleeding, the bleeding lasted around 2 hours then went away, now 5 hours later I have very, very light pink mucous-like blood after I pee. I’m supposed to menstruate in 2 days & I’m not sure if it’s implantation bleeding or early bleeding from my menstruation? *Note: I haven’t had any of my normal menstruation symptoms*