Period on birth control

Hey there! I have been on birth control for probably six months and am usually really good at staying on top of it, but last week I missed a few days in a row and ended up starting my period before I got to the sugar pill week. I was on the third week, so not far from when I was supposed to start my period. Should I just catch up on the missed pills and keep taking them in the normal order even though I am already on my period or should I start taking the sugar pills and take the rest of the birth control pills when my period is over? Anyone have experience with this?