I agree with Dogsbestfriend. All this chemo is OK, you will be fine, its only a couple of days cycle stuff is utter utter crap.
Everyone is different, chemo regimes are different (mine was every two weeks for six months,and I had low WBc to start with)
Did i need help going to the loo - yes, the lining of my gut was stripped away, I had diarrhoea almost constantly, and the meds didn't stop it. Luckily I have a DH who didn't mind clearing up shit - I wouldn't have wanted extra kids in the house to see it though.
I was hospitalised and nearly died (and I'm not exaggerating) - because yes someone gave me an infection, which turned into multiple infections. Someone who didn't quite get 'don't come near me if you have an infection' - I had to see my children looking at me through a glass hospital door, and wondering if i would make it.
Its not the fucking 'cancer card', Its cancer, its a life threatening illness, its emotionally draining and physically exhausting. Some people may be lucky enough to sail through, - many experience the whole gamut of SE's.
None of you have any idea how the OP will be affected, she gets to decide what she does and doesn't want to deal with, its the one time in your life you do get to be a bit selfish, and yes others have to be a bit considerate of your needs.
OP - I wish you the very very best in your recovery, I hope very much you don't have problems during chemo, many folk, possibly the majority don't and I'm not wishing to scare you - just pointing out possibilities, which you will have been told already.
You might find you can have the children over, at points, who knows, - but you are quite right to say, 'if I feel ghastly, then for that short period of time I am my number one priority' Its not selfishness, it's self preservation and it's a powerful instinct.
If you need any support or hand holding while you're going through this, come and join us on the tamoxifen thread on health, - you'll be made very welcome 