Thanks in advance for your help 
I have had exceptionally light pink discharge when I wipe since Sunday (three days now) I am on the mini pill Cerelle and have not had a period since November 13th. Furthermore, I missed a pill on the 28th of November. However, did not have sex that day or for a week after. I am currently undertaking my PhD and have been under a lot of stress this month-losing 11 pounds in 3 weeks, due to being too stressed to eat more than a few hundred calories a day, plus I am stressing about the possibility of pregnancy as financially it is not the right time for my fiancé and I to have a child. I took a few pregnancy tests when i missed my period in December and they were all negative. I also took one yesterday and it was negative. I know it is impossible to tell really but do you think this is implantation bleeding or pill related? (I have been on the pill for 4 years) Thanks, J.