Could this be my month? ttc #1!?

Ok so so may know we are ttc so here is my cycle
July 7th: @ 6:30pm had Spotting
July 8th: Heavy
July 9th: Heavy
July 10th; Medium
July 11th; Light * had sex with my fiance that darkness when I woke up next morning was bleeding only that one time..

**WE HAVE BEEN BD EVERY OTHER DAY AND THE 17, 18, 19

COULD THIS BE MONTH?
HOW LONG DOES IMPLANTATION BLEEDING OCCURS?
Answers:    implantation lone last a few hours. its only very oil lamp spotting when you wipe most people dont even notice it.

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