Should they be paying me more?

I work as a full time nanny to two boys. One is 4 and the other is 2

Lately the family has been house hunting and last week they got the house they’ve been wanting. On top of that, the mom has to get emergency surgery on Thursday this week.

Because of all of this going on, I’ve been moving around my days and staying late and working weekends for them so that they have more convenience, pretty much the past month an a half

I work 40 hours and get paid $300 a week (sadly that’s the highest anyone pays within an hour drive from me)

I feel like I deserve to be getting paid for the extra time I spend working. They’ve been having me stay a couple hours late a few times a week such as today, and then on Thursday I have to work from 5am-6pm and I had to work on Saturday as well so I only got 1 day of not working which was Sunday

Instead of paying me more, they come up with stupid ways to not have to pay me... like my over night fee is $100 which they agreed to but instead of having me stay the whole night when they have to go somewhere, they’ll come home around 3am and then have me leave so they technically don’t have to pay me that extra $100

Or they’ll have me come an hour later than normal like tomorrow because for some reason they thing that cancels out the fact that I have to work an extra 7 hours on Thursday for the moms surgery

Oh and to add to it.. I was supposed to leave today about 20 minutes ago and they aren’t home yet and I know for a fact I’m not gonna get paid for that 20 minutes

I don’t want to sound ungrateful but I feel like I do a lot for this family and they are just being cheap and it’s bullshit

Like it’s not even about to hours to me honestly... wouldn’t you want to give your nanny a bit of a “tip” for moving around so much and being flexible?? Like that’s just being a decent human being in my opinion. I have to switch up plans or cancel things I want to do at the very last minute to make things convenient for them since they’re going through so much right now between the new house and surgery. Like I understand it’s hard.. but they need to understand none of this would be getting done if I wasn’t there helping so much.

And I crazy???