You certainly have had some fairly awful side effects. Chemo is a marathon and you do get worn down towards the end. I had a mastectomy in May followed by 18 weeks of Chemo (FEC/Docetaxel). I felt that during the last 3 rounds (Docetaxel) I never felt very good except when on the DEX. It was pretty much 9 weeks of feeling various degrees of awful!
It is just over 4 weeks since my final dose and we are trying to move house. It is a new house and the builder is kindly letting us begin moving some things slowly while the last few building things are completed. I have also had 8/25 radiotherapy treatments. I have just started being able to do normal activities again and am not falling asleep at 7pm anymore! There is a light at the end of the tunnel and you do recover and start to feel better.
Let the oncologist know about your side effects. They should be able to weigh up the benefits compared to the side effects and explain what would be best for you and why. For me Chemo gives me a 20% decreased chance of a recurrence (I had a 40% chance of recurrence without it, too high to risk not doing the chemo!) Your statistics will be different and chemo may not make such a big difference for you.
Best of luck with whatever you decide to do.
Deanne xx