Roadblock to treatment

Currently I had grade 3 BC and stage 3, and supposedly starting my chemo this coming Monday 20 Jun. Since being diagnosed with BC on 2 May, it has been so many hurdles. When I finally had an right mastectomy and right axillary clearance on 19 May, the report came back my tumor is not 2cm as shown on ultrasound and it's actually 7cm and I have 3 out 20 axillary affected. And my PET scan shows suspicious activity. So Dr ordered liver mri and left breast biopsy to make sure they are just fibroadenoma. Both my liver scan and left breast report came back normal and I'm set to start my chemo on 20 Jun. But I had a dental check today and it shows that my wisdom tooth has decayed inside on the x-ray. Called my oncologist and he said he wants the wisdom tooth to be out first before chemo treatment hence my treatment is be delayed by another week. I feel so lousy and horribly worry that given my grade 3 stage 3 BC my treatment need to be postpone for another week. I have been having night sweats and tingling sensation or pin n needles on random parts of body. Went to GP, he told me that it's common for breast cancer patient to have night sweat! It felt that I have so many hurdles to go thru before my treatment start
It's so hard to be strong. I'm so depressed that I can't even cry.

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Comments
It's not unusual for the pathology after surgery to be different to what was first said
https://www.cancervic.org.au/living-with-cancer/common-side-effects/mouth-health
There is never any need to feel isolated on this forum.
Even though everyone’s experience is slightly different , the fact is we have all “ been there” one way or the other.
My own story was I found a lump and even though I had a clear mammogram 12 months prior I had a 5.5cm lobular cancer and a mastectomy was recommended,
In the end I had a double mastectomy , radiotherapy and reconstruction.
My good news was no cancer in the lymph nodes ( so no chemo only radiotherapy) the bad news was the PET scan showed something suspicious in my thyroid which turned out to be a completely independent cancer so I had a thyroidectomy as well.
It seems there is often good news and bad news.
I try and concentrate on the good news ( my cancer was stage 2 and 2 years later I am still here).
All the best with your treatment and there are a lot of great resources on this website
Take care🌺