I don't know where you have worked before, but in the hospitals I have been in, nurses (at least RNs) do not do the things you mention. These are all done by the LVNs or care attendants.
I got my BSc, Chem major, Math minor (gpa 3.85), and planned on going to med school. I was in the same boat as the OP and needed to make a living, so while I was getting my BSc, I attended nursing school (it was not as easy as you would think - I am not a particularly strong essay writer and it was a stretch) and got my RN degree (gpa 3.65).
Meanwhile, several of my friends went on to medschool without me
.
I applied a few years later, was accepted, but in the end turned it down.
I saw what my friends went through.
I saw what horrible parents they were (due to lack of time and intense pressure, moving around to try to find residency, etc) and by then I had children.
I saw how the program ran their lives, and several wish they had never done it in the first place.
So I decided to go for the NP program instead.
I have never looked back.
When I was going through the program, everyone knew I was going for the MD (along with several others), and we did not get any negative attitudes at all from the staff or fellow students.
If you are going to go for the MD and have the attitude that you are 'much better than this' during nursing school, well, then you will reap what you sow... and you never know...nursing mught just 'suck you in'!!
In many ways it is more rewarding than being an MD.