The pill...

OK. So I just recently started taking birth control and I’m on my last week which is brown pills, but ever since I’ve started taking it I’ve experienced so many complications with my body. Of course I bled which is normal but extremely sore breasts, I’ve even been constipated and nauseous. However, today when I started my first brown pill I’ve had cramps, menstrual-like cramps. What are y’all’s opinions on all of these symptoms. Should I just switch pills or stop all together?