When Should I Take A Pregnancy Test.?

So My Period Was Due Oct 1st N It Still Haven't Arrived Weeks Before My Period Was Due I Was Experiencing Mild Cramps & I Have Been Gaining Alot Of Wait Which Is Weird I've Also Been Peeing Frequently N I've Been Constipated But Today My Breast Are So Sore N Heavy I Hate To Touch Them At Times Please Help When Should I Test Not To Mention Me N My Boyfriend Had N Have Alot Of Unprotected Sex & He Always Cum Inside Of Me So There Is A Huge Chance I HOPE I AM