New diagnosis, have had mastectomy

You'll find out as you go along @teepee.  Don't be scared to ask your kids for help around the house - they are capable of more than you think!  And if friends and family ask if they can help, give them practical things they can do - whether it's ferrying kids around or cooking a meal.  People are happy to help but if they don't know what it is you need, the help may not be in the form that is really necessary.  Maybe draw up a list of things that you can suggest as it is difficult to come up with things on the fly.  One of my (single, childless) friends dropped everything to drive miles, pick up my youngest and take her across town to a state sports event while I was in chemo.  Another looked after my kids when needed while I was in surgery or having chemo.  That was probably the biggest thing for me - you can't drive when you can barely stand up straight and the meds make you drowsy.  So, I would suggest looking at your calendar for the term and seeing who is likely to be available (if necessary) to do the taxiing, or to have the kids at short notice.  On the other hand, you may cruise through and not need any help at all.  By the way, online ordering for groceries is a lifesaver!