Implantation?

Hey ladies,

My cycle has consistently been 34 days for over a year. I confirmed ovulation 11 days ago with OPKS. Today im on cycle day 28, which means my period isnt due for 5 days. (3 if you count from ovulation) and im now spotting small amounts of light brown blood. I just noticed about 5 minutes ago. Its there when i wipe but nothing was in my underwear. Ive noticed an increase of discharge for the past 2 days and the sides of my boobs, almost beside my armpits began to hurt today as well. They feel bruised almost. Ive had super mild cramping, but it has felt nothing like my period cramps usually do. My fiance and i had sex on my fertile day and he came inside a little before pulling out. (We are both adults and are ok if we get pregnant before someone lectures me) would you say this is my period? Or could it be implantation?

If it im not pregnant the universe is playing a sick joke on me because im getting married on august 30th and and this would bump up my next cycle to start on my wedding day...