Pink Dishcharge? x

 Me & My Fiancee Have Been Trying to Concieve for A Year and a Half, My Periods Are Usually Every 28Days Although This Month They Came 2Days Early, Lasted For 4Days Then Two Days Later When i Went to The Toilet i Noticed Some Light Pink Discharge on My Pants Also My Boobs Feel Tingly and Bigger ( They Usually Do Get Bigger Boobs Just Before My Period Then They Go Back to Normal Once i Start). I Know Pink Discharge Can Be A Sign of Pregnancy Before Your Period Like Implantaion Bleeding Although i Don't Know What it Means After a Period so i Was Just Wondering if Anybody Has Any Ideas on What it Could Be? 

Thanks :) x