68W MOS change in AIT?

I am a female graduated Basic on Dec 5th and now home for christmas exodus. I will be leaving to AIT on Jan 2nd to Fort Sam Houston. My MOS is 68W. I am seriously not interested in my MOS . I may sound stupid but can someone please try to answer my question. I want to reclify to another MOS as I panic when i see blood and my physical apprearance I am short to lift the weight of other persons which is usually dealt in 68Wand are the requirements for 68W. My recruiter have not shown me any videos and i have not done any research before taking this MOS. Before shipping to BCT i asked him for reclification but he did not let me reclify. Is there any way I can talk to someone soon as I reach AIT for MOS reclification.I know some of them say fail AIT and change your MOS but I do not want to do that.Before my AIT training starts can i request someone for reclifying.