New diagnosis, have had mastectomy

I had my visit to the oncologist today. My brain is fried. I wasn't feeling particularly good this morning. The last 2 days I have been feeling a little nausea. Not overwhelming but just there in the background. I have been told I have to stop taking Arimidex before commencing chemo. Then start when I finish treatment. I am to have 6 cycles. 3 on FEC and 3 on Doxytaxel. He mentioned having the Doxy weekly at a lower dose which reduces side effects. So I start on 10th October and finish 23rd Jan I believe. Does anyone have any info about FEC and Doxy. Symptoms or advice please. The oncologist told me nausea, aches and pains in joints. I am glad I had the breast nurse there cos my partner and I got hit with dates appointments and info, afterwards I couldn't remember half of it. Why did my brain have to be so foggy today of all days. I asked him if this was the best chemo for what I have and he said No tongue in cheek. I know it was a bit of a stupid question but I meant as far as the other types. He said he didn't know which one was better thats why they will change it half way through. Somewhere in the process my brain forgot to tell me he had explained that already. I felt a bit foolish. I am having my port put in next Wednesday. Here's to the beginning.