This stress is a mess

Coming into the midterms makes me worried and stressed because I already have to make sure my grades are kept up and all my work is done but I also have to study for this test and hope I do well on it. I work so there is hardly any time for much but when I do have time I do all my work. Trying to fit midterms in is very difficult and when it comes to testing my grades arent always that good because I panic when I test. I try to do so much at once and sometimes I forget how to pace myself. I end up upset at myself because I know that I know the work but it doesnt always come out on test.