Good evening all

Please read I'm at a complete loss and after so long of having so much hope. It's slowly fading away cause day by day I'm faced with another worry. 
i have a one and a two year old. I cannot bare the thought of anything happen to me. 

So my situation at the moment is

Back in March, I had a small lump removed by a dermatology biopsy. The results came back a while later but weren't clear. They said it seemed to be "deep inflammation". 
When I say "lump" I mean it was more of a red bruise-like bump on the surface of my skin. Almost like a thickening. 

anyway they said they'd like to review the area in 3 months. 5 month have passed. So last week I rang and explained that I have since had another "lump" identical to the other one. Except bigger. Same breast. Near enough same place. They looked again. Referred me back to dermatologist. 
a few days later, pain in the armpit. More tenderness than pain. But would hurt when pressed. Went back, "oh probably nothing 23 year olds don't tend to get breast cancer" "I can't feel a lump in the tissue" (even though I said IBC doesn't always present a lump) but said they'd refer me to breast clinic anyway. But because of my age, and because they aren't worried. I could be looking at a 3 month + waiting list. Fine. 

However, this evening. I've noticed quite bad dimpling on the same breast. And it's not just one small indent. It's quite clearly a lot of dimpling. I've had a bath. Left it a few hours wondering if it would go back to normal. 

Still the same and I've noticed if I raise my arm it goes deeper. Now I know I can't say it is this. However I'm starting to feel as though there's nothing else it could be. 
breast cancer is common in my family.

But the thing that's concerning me most is that the signs I'm showing is of IBC and it's the most aggressive and hardest to diagnose. 

Is there anyone who's experience anything similar that can shed some light? Don't worry about scaring me at all Im not naive I know it may be nothing for me. I just want to communicate with someone who may understand my worries and emotions

thank you so much

if this is cancer, im not scared of that. I'll be ready for the fight. But I just fear any of it affecting my boys.