Talk to General Practitioner on Breast Pain

AoaI am having pain in my left breast, armpit and it's surrounding area since 15 days. This pain at times moves towards my arm, shoulder and neck. I do have pain at one point in my breast.Can any doctor here guide me that is it normal to have such pain because of muscular strain or hormonal changes or it could be a symptom of any serious disease linked with breast cancer or lymph nodes. Note: I had miscarriage in march and after that I was taking hormonal pills due to imbalanced hormones till last month. And I am having this pain since I stopped taking those pills.