Advice Please

Ok, so my day was pretty much ok, until I got home from work. I suddenly just went into complete panic and started freaking out and crying uncontrollably! I dont know what set it off, but I started panicking about my job. I dont want to stay in this particular job for the rest of my career, not earning enough (which then set me off with how am I able to raise a child when I cant support myself - but lets not get into that now, as I am about to freak out again!)

The problem is, is that I am not really qualified for any corporate job, so how am I ever going to move up in my career? I got a diploma in Musical Theatre - singing, dancing and acting. And that is what a did until I started TTC'ing. A job presented itself and I took it. Salary? Really crap - one up from entry level. I cant do this for much longer.

How am I ever going to sort this out? Basically my job is assisting my boss, who's position was created because he was promoted to another position and drowned. They didnt want to lose him, so they created the position "Special Projects Manager". And I assist him. Our job entails all sorts. We basically do all our other departments once off projects that they dont really have time to focus on, such as, fun projects for our staff (we work in a casino and have 1400 staff) Re designing new uniforms. New access control. CSI - corporate social investments (looking after our charities) etc etc.
So what work can I actually apply for, and who will employ someone (needing an income of more than what I am earning now) that isnt actually qualified in anything?
I have taught myself a little about Photoshop and I can edit music and do very basic video editing - once again, self taught, no diploma or degree.

I really need help please. I cant see myself in this position earning this salary until I retire.
Do any of you have any contacts for me? (I will wait until after my IVF though, cause if I do get pregnant, I want to be covered for my maternity leave)