Yes, totally normal to feel that way. My IDC was also abnormal as it had growth consistent with a lobular carcinoma but the staining apparently showed it was still a ductal carcinoma. Having an abnormal cancer just ramps up the stress about it I can assure you, however, my Oncologist wasn't concerned about it.
You are eligible for a mental health plan, see your GP to arrange this, they can organise you to see a psychologist and work through the stress if you feel you need it. It should be covered by Medicare.
My sister says you will go through the 5 (or was it 7) stages of grief when you are diagnosed with a serious illness, and I certainly am. My most common stage is anger and I revisit it often.
I go back and forward through the stages, and still sometimes think it is all a bad dream.
if you go onto the resources section of the BCNA website, there is a fact sheet about Dr Google, it lists the reliable websites for you to access.
it also has many other fact sheets you can order in hard copy or download yourself.
I thought I knew a lot but found many there that were very helpful, including the one on the mental health plan.
we are here for you to ask questions too, and to just listen if you need to let rip about something, ask your Surgeon a lot, they should give you lots of information too, mine gave me the My Journey information book, and they had a brochure for contacting the breast care nurse, who is a fund of information.
hoping you can find a way through the jumble of thoughts and can get your treatment plan in action soon, it really helps.