I need to know.....?!

I need to know.....?

I had a period march 30, skipped april period (had neg blood preg test), had period may 21 and then june 4-8 had dark brown discharge. So would my last period be considered may 21 or june 4?

2 weeks ago
the last time i had sex was somtime in may before period and i had sex june 21 22 27 28 29 and july 2

2 weeks ago
no i'm not on BC and yes it was unprotected (im engaged)

you have mis periods, It is better to have protected sex.