Have a question about the whole contract thing at meps..?

the mos that i wanted wasnt available so they did something thats called a (ROC) at meps... the only thing i signed was different sheets on a computer nothing in form of paper (like a contract) ... the things i signed had my mos 25B on it...and where i will go to BT and AIT and all these different things... my question is.. will i still sign a real contract on paper, was this my contract or is my recruiter and meps lying to me about getting my MOS.. i didnt get any copy of those things i signed neither... im a little worried that after BT theyll just put me in any MOS they want... need advice please leaving 4 BT in 20 days.... i will also ask my recruiter what he says but dont really trust him