What Causes Pain In Armpit And Hip Area?

I am a 26 year old Female..... I am waiting to go to a doctors appointment in 3 weeks (first available) I have been having pain in what started as my right side just above my breast near where the top of your armpit is. It started in the middle of October. I thought I had pulled a muscle and gave it time to heal. Since then I still have the pain but I am also having armpit pain and as recent of the past week pain in my hip area. Like if you follow from the middle of your knee straight up to where your underwear line is where it aches...... shouldn't say pain. So now these 3 spots all ache all the time and nothing makes them better. I am driving myself mad! My grandmother on my moms side and my aunt on my fathers side are both fighting breast cancer which I am pretty sure is adding to my anxiety.