Hi and thank you so much for this query. I a so sorry to hear about the pains you have been experiencing in the right side of your belly. sensitive and itchy breast accompanied by mild abdominal pain in most cases doesn t really represent a worrisome state of health. However, if these symptoms should persist or get worse, then you may need to be evaluated for a possible cause. For now, take some pain medication and observe for another week. If any red flags are present, then you should consider visiting your OBGYN for a closer evaluation and possible treatment. Please, unprotected sex exposes you to unwanted pregnancies and STDs. Always consider using a protection during sex. Also, may i suggest that you consider using a more reliable contraceptive method if you are not nursing plans of having kids now? Thank you. Hope you find this helful and provide guidance on how to approach this problem. I wish you a rapid resolution of symptoms and good health. Dr. Ditah, MD.