Hello helibee! I have a 17 month old, too. If you need to put him in nursery, don't feel bad. He'll have fun meeting other kids. He'll still think you're a grand Mum. :)
I often feel like my life is a long string of problems -- I can't believe one of your friends actually said that to you! How horrible. She needs to adjust her attitude. It sounds like your attitude is great. You are doing what you need to for your sons, even to the point over agonising over putting DS2 into nursery to give yourself a needed and wee break. You sound like a dedicated and caring Mum, and your sons need you to care for yourself as well.
It's been another mad week at work, and I've pretty much missed my major deadline (Monday, no way it will happen by then, but I've also been told there is a remote chance of fixing things if I can do it soon -- it would almost be better to just know I've missed and move on, but I feel I still need to do what I can as I can, as it does have repercussions for everyone in the unit, although only incremental). Next week will be hard too, but hopefully things will settle. DH sent his thesis to his adviser yesterday, so has been able to help out more. Once he finishes completely, in a few weeks, we'll rearrange our lives a little bit and I won't be run quite so ragged (I hope).
Interesting about tubs making you tired. I really like hot, hot baths, which I can't get with DD around. But sometimes I stay in too long give myself a headache! Perhaps from dehydration/overheating. So it might be better that I can't take them.