Spotting and Cramps

I started my birth control at the end of March but ever since then I’ve had really bad cramps and spotting in between each of my periods. It usually happens during my third week of my pills and lasts until about a week or so after my period. My chest also started breaking out really bad after starting The pill. Should I talk to my doctor about it? Is it normal? Should I wait another month or two to see if it stops?