Sick while pregnant... again

SO, for fun i guess im sick for the 3rd? Maybe 4th time? Since getting pregnant. I was prescribed another antibiotic, and i really wish i didnt have to take it at all. I feel like I'm not doing my baby justice and that i cant take care of myself since I've been sick so many times and for so long *been struggling with a hang on cold since the beginning of november*. Any tips? Should i quit my job now? I work at a school and im sick of getting sick when it seems like no one i see during the day is sick. I hate taking medications while I'm pregnant. I feel like my baby deserves to have me healthy but everytime i feel like I'm turning the corner i just seem to go backwards. Sorry for the long rant. I just need prayer, comfort, advice. Anyone else ever been sick a bunch while pregnant?