Taking pill back to back

I recently finished one pack of pills and moved straight on to the next one without the 7 day break but I've noticed that I'm still having Pms symptoms that I normally get before/ during the 7 day break that I have. Is this normal? My breasts/ nipped are slightly sore and I have mild cramping which is normal for me before and during my period but does it happen sometimes even when you carry on to the next pack?