Antifreeze shooting out the top of the reservoir

Almost a month with this problem already. For some reason my car somehow heats up causing my antifreeze to be shot out along with steam through what I believe is the breather on top of the reservoir. I do keep an eye out on the temperature gauge inside while it happening and it is at normal which is a line less than half ways. I do smell antifreeze most of the time when I have my AC on but I am guessing that is because of it being shot out already. I might be wrong. My thermostat was replace because I thought that would have been the problem since it had a small crack on the plastic of it. I do not want to keep driving it but it is my only way of transportation. So every time I fill it back up by the the I get to work or get back home I have lost all the antifreeze in the reservoir. No engine light has come on at all either. They did give me a code saying something like “coolant performance low”, or something like that. Please help because as I see parts for this car are not cheap!