Should I ask for a raise when I review with my employeers in November? I am a nanny for 7 month old Twins?

Hi, I am a nanny for 7 month old twins one of wich has severe hearing loss and wears hearing aids that require frequent trips to the audioligist. I am 22 and I have 8 years paid experience and 3 years volenteer experience before that. I am also infant toddler teacher certified as well as first aid and cpr. I am given a car to use during work hours so I do not have to put miles on my car, but am expected to go to all apts. to the audioligist 1 or 2 times a month, and do errands pretainng to the children, I feed two out of three meals a day (Some times All 3) food wise and feed two out of four bottles a day. I work ruftly 50 hours a week and am responsible for mostly everything pretaning to the babies Such as doing all the babys dishes on a daily basis, I also Do there laundry (wich includes washing, drying, folding and putting away) and change there bed sheets 3 days a week .1 day a week on top of the laundry I am responsible for washing all of there toys there changing table pads there rug from there room and the bouncy seat covers. I am expected to plan a infant appropriate game art project or activity and fallow through with it on a daily basis. I am also expected to stay later one day a week startng next week to learn sign language. I stock all the babies diapers wipes and supplys in both changing areas, so they wont have to. I am also responsible for taking out the diaper trash 3 days a week. I work 50 hours a week ruftly 7:45 to when ever they get home usualy around 6:30, but some times later. The parents are very demanding wich is sometimes very frustrating they have asked me not to put the plastic bibs in the dryer and to hang then on the basister to the stairs, if they are still wet when I leave when I come back the next day they are still hanging there because they wont put them away. I currently make 32,500 before taxes salery a year. wich is barley enough to live on in this state. I feel that with my experience and responsibilitys I should be making more but i thought it posed well to ask for other peoples opinions. Thank You, for your time. oh BTW I am located in MA about 15 mins north of boston.