Bruise on breast, freaking out.

Back in December, my mom noticed a bruise on the side of my left breast while I was wearing a dress. I would've never noticed if she didn't say anything. I noticed on my right breast there's what looks like a bruise (almost in the same area) except it's very faded and hard to see. I put random ointment I had at home on it but nothing so I went to the doctor 2 weeks ago. At first look, she said she thinks it's a fungal infection so she gave me a cream for 2 weeks which I've been using. I don't think I've noticed any serious changes besides it getting somewhat lighter (but I can't be positive honestly cause sometimes it looks lighter, sometimes the same. Im 24, african american, the only disease in my family is diabetes (both of my parents) but that's it. Prior to going to the doctor, I had a lot of itching around my breast and body as a whole. I also experienced some sharp pain in the breast that same week. Idk if I was psyching myself out but at the time I was also having shoulder pain (none now). Since I've been using the cream, the itching has decreased ALOT and now it just happens randomly (like twice a day for 2 secs), so nothing like before. When I itched it of course I had redness but now I don't since I'm not as itchy. This week, I've noticed a small lumpy feeling near the bruise. It feels solid and when I press down on it, it hurts a little as if I had hurt it before. My period will be starting this week so idk if that's related.
I also want to add, I had a similar experience in HS (about 8 years ago). I had shoulder pain and I felt a lump. Had an ultrasound and was told it was breast tissue. This is the first time I've had a similar issue since then. The bruise along with this shoulder pain is what has me freaking out the most. Does anyone experience this or have any idea? My follow-up is this week so I might get sent to do an ultrasound but any idea on what this could be? Google has been telling me the worst things.