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I am sorry you are not feeling great. I can answer most of your questions, I think. Everyone reacts a bit different to Chemo but I have had the same course as you are having, 3 FEC and then 3 D. I am just 2 weeks away from last D.
I found it took about a week for me to recover from each dose. A bit longer for D. The exhaustion settles after day 5 for me. The redness on your face and chest is usually a reaction to the DEX steriod medication that you take for first couple of days after Chemo. The exhaustion can also be a result of coming off the steriod high and feeling the impact of the Chemo. Mention any side effects you have to your doctor and nurses before next Chemo. Most people seem to start to loose their hair about 2 weeks after first FEC. Your head may feel like it is burning and your hair will start to feel course before it falls out. It took mine about a week to totally fall out. I found it easier and more comfortable to have it shaved once it started to go. Less mess!
Hope this helps. Take care and hope you feel better soon.
Deanne xx