The good news is that you have time on your side. Do not worry about your boss just yet. Start making sacrifices now by saving as much money as you can. Talk with your husband and agree to a goal... for your schooling, savings, controlling expenses... and yes
... avoidgetting pregnant in 2013
. If you get pregnant, your priorities WILL change.
Approach your boss again after you complete BIOL111. See if she is able to accomodate a flexible schedule in the fall when you start your clinicals. If she says no, you will have a difficult decision to make, but you will have savings. SO, you either (1) render your resignation 2 to 3 weeks before you start your clinical rotations and go without a job while in LPN school ...OR...
(2) look for another job elsewhere or another position within the hospital that would accommodate your needs as a student.
We all have to make sacrifices for things that are worthy. You have time to get ready for it. Good luck !!!