the problem is : my period started on 11 december so i started taking the pills regulary from 12 dec ( but i missed a pill on the 26th ) until 29 dec and then my period started again the next day ( the flow is really weak) and then i took another pill on the 31th. I still have 3 pills form the holder. Is this normal. Should i start a new pack or finish the last 3 pills first? I'm not sure what to do