Just keep your head up. And proudly tell them your pregnant when you feel ready! If your a good worker they will have no reason not to let you go fulltime other than the fact that your pregnant and that is discrimination and a huge lawsuit that im sure no bank wants!! Be happy enjoy your pregnancy and new job. ^_^
I hid my pregnancy at my part time lol. Just tell them. They can't fire you.
I got a new job when I was about 12 weeks and I didn't tell them. I never said anything, they just finally asked when I started showing. Around 24 weeks. They weren't upset at all.
Wait until you feel comfortable telling them. Show them how hard of a worker you are and everything will be fine