Can you tell me what this iss?? ='[?

i wish i had a stright anwser for you but it is impossible, i can give you advice tho...=)!! The same thing happened to me and i actually had to go back on birth control to regulate them again. irregular periods suck i know...but a girls body is so impredictable with all the hormones we have in our bodies, just the slightest mutation in hormones can cause spotting and/or a period. but it is very possible that it very well could be from implantation bleeding, it can very from pinkish color to a some what light period but normally doesn't last but a couple to a few days...