trying for number one!!

okay so my last period was Jun 17..which means I ovulated close to July 4. which was a holiday so lots of booze and baby dancing... we have been very actively trying..for July my period never came. in the 27th I had very light pink spotting that lasted maybe 12hours and only when I wiped. .that wad it. is this implementation bleeding. I took a pregnancy test about 4 day's before and I swear it was positive. but I have no sore boobs or nausea. just tired and extremely moody and hungry and tired 24/7 books and stomach are bigger tho.. help?