Off track

Cat

So I’ve been on birth control for a while now and people tell me its ok to skip my sugar pills. So i skip them for a week (so take my normal pills) and then i go back to my sugar pills the following week. Is this bad? Should I skip them all together? Also i sometimes push my sugar pills by taking an extra day or two. Now my days are all messed up and Its affecting when I get my period. How do I fix this?