New Indent + Worsening Pain/Symptoms Over Last Few Weeks

I originally posted this in the “Concerned About IBC Start Here" thread, but quickly deleted it and decided to post separately. I hope that's okay. I've also thought of some details I'd originally left out, so added those below as well.

I'm not sure if I should post here for this, but I am 29yo (30 in October), and started having right breast burning/pain similar to when I had a clogged ducts with breastfeeding that started around 3-4 weeks ago. Its since progressed to feel like heaviness, intermittent burning/itching (including some burning and itching on my nipple), and pain in my armpit. I had seen an NP at my OBs office who told me it's likely hormonal pain, but she'd order a diagnostic 3D mammogram, which I had scheduled for the following day. When I got there the machine was actually broken so I had an ultrasound instead (clear).

The next day however I did notice a small indent forming on the side of my breast where the pain was the worst (this was earlier this week). I could really only see it in the mirror and not from above at the time, and even a couple of days ago. Today though I noticed it's bigger, and I CAN see it when I look down. That's where the pain/heaviness has been the worst and also where my husband has said he's felt like my breast feels different and "heavier". I also noticed I'm now having pulling or ripple at my areola from where it seems like the indent is pulling it maybe?

I also newly noticed tonight that I'm getting deep pitting stretch mark looking marks coming down on to my breast further and further but some do almost look more like pits than lines. This is happening around the indent.

I don't have a rash that I've noticed though, but again, today I just noticed a pink discoloration on the same side of my right breast where the burning pain is the worst and the indent is..

All of these changes are happening so rapidly in just the matter of weeks and are all localized to my right breast. I did message my OB back to push for the 3D mammogram just for peace of mind if anything and they have placed a referral to the breast clinic at my hospital instead so they can decide how to move forward and if I need the mammogram, or what next steps should be. I was hoping to get further insight from my OB, but they had sent my questions to the NP I saw and her response was essentially since the ultrasound was fine she didn't think I needed anything further, so she'd just place the referral for the breast clinic “if you want to" and “they can decide". Their first available appt was 9/7, but I may reach out and just let them know know about the changes I'm seeing sometime in the next week.

I do have family hx on both maternal and paternal sides of my family (secondary family members, but of note, my dads mom was younger and unfortunately passed away younger and my moms mom was post-menopausal and every woman on my moms side has gotten BC post-menopausal). Because of that they did order genetic testing for me as well, so that appointment is the 29th.