Just Turned 19, Lump, Is it Cancer?

I just turned 19 on the 26th of March. Last Sunday, I felt a small lump on the lower right side of my right breast. It moved around a lot and felt like a little marble inside my breast. I went to the doctors for it the next day and she told me to go get an ultrasound to be cautious and make sure it isn t anything. I went to an old hospital to get it done and the ultrasound machine was outdated as well. The ultrasound results came back unclear and the radiologist said it had fibrious tissue inside it and was possibly a fibroadenoma. My PCP referred me to a breast surgeon to look at the lump. She looked at the ultrasound and wanted me to get a breast biopsy done because it was a little irregular shaped in the ultrasound picture. It s very small, it s only 7mm. During the biopsy, the radiologist even said its probably a fibroadenoma. It also kept moving every time she would try to take a sample. It took 7 tries until she could get a good sample. There is no breast cancer history in my family. I have been on the birth control pill for two years however and I am worried that the pill could cause cancer.Does this sound like it could be cancerous? I am worrying so much waiting for the results. I have anxiety issues to begin with. Just want to hear some further input about my situation.