Overtime authorized

The project load has been steadily increasing over the past month at work which has finally led my bosses to ask all of us underlings to work extra.  At my last job that would have meant more hours for the same amount of pay since they had a "you are salary so we own you" kind of mentality but here it means extra cash money!  How much extra cash depends on how many extra hours I can get in a week above my 40.  It's going to be difficult since each week I'm already scrambling to make up extra hours to cover the ridiculous amount of time I have to spend in the doctor's office for the twin pregnancy.  However, given that I'm not having any complications so far in the pregnancy I feel like now's the time to push for some extra dough to cover my maternity leave.  Thankfully my job is not physically difficult and I sit at a desk all day with my feet up but I'll confirm with my doc next week to make sure I'm not overdoing it and sending myself into bedrest!