HELP. 16 weeks & quitting.

Its really early, but I think I need to quit my job... I work at a very corrupt, unorganized, short staffed (because of the owners greed. She hires people who cant speak english and pays them minimum wage when she should be paying at least 12 an hour for what we do here), and unprofessional daycare. Ugh honestly I could go on and on... this post would be a novel by the time i finished telling you the things wrong with this place. It puts an extreme amount of stress on me. EXTREME. I already have severe anxiety to the point where before I got pregnant I would throw up all of the time anyway, and I could never eat because of how stressed out this place makes me. I have worked with kids for a really long time and Ive had a wide variety of experiences working with them. I always loved it. This place is a nightmare. Just the way its ran is a nightmare, which stresses me out from the second i walk in. That scares me because I dont want to stress myself to the point of miscarriage, or work myself silly and hurt myself. Not to mention, this group of one year olds I have are completely savage. I love them to death, but its dangerous for me. I literally get beat up by babies every day. And once one starts doing it, they all run over like its a game and then I have 10 babies whaling on me while my foriegn coworker sits across the room acting like she doesnt know whats what. Ive gotten used to getting smacked in the face and beat on... but recently it got out of control. During circle time, a baby came up behind me and grabbed my ponytail and SLAMMED my head onto the ground. I was SCREAMING for him to stop. He wouldnt let go of my hair and litetally pulled me to the ground and slammed my head onto the extremely hard floor. That really shook me up, but I was willing to just suck it up and look past it. Until yesturday... another child who is probably the worst one in the entire room and literally (i mean LITERALLY) whales on the other babies ALL DAY and he hits VERY HARD and has left bruises on me, he grabbed his shoe and slammed it so hard on my stomach that it knocked the wind out of me and almost brought me to tears it hurt so bad. For the rest of the day my ribs were hurting and it was hard to breathe... i just feel like this is it for me... i cant do this anymore. I will lose my sh*t if one of these babies causes me to lose mine. Thank god there was no bleeding and i think the baby is okay... but how much longer can i put myself in danger like this? These one year olds dont know better. I dont know what to do... i planned on working until the end but I dont think i can do it. I get left out of ratio every day, and i was out of ratio both times these instances happened. God forbid i complain about being out of ratio WHICH IS ILLEGAL. Every time i explain to my bosses my concerns they just brush it off and forget about it or give me dirty looks like im ridiculous and stupid for complaining. Ugh. Help.