Glory
Just because you aren't powerful or famous doesn't mean that you can't feel accomplished in this job. When a bewildered new mother breastfeeds her child for the first time with your help, you'll feel that hint of glory. When a pregnant woman turns up at the health clinic alarmed by the incredibly hard-fought soccer match happening inside of her, your soothing care will put her fears to rest.
Just one grateful new mother with a healthy baby in her arms and tears in her eyes will be enough to justify all the routine checks and discharge forms that take up most of your job.
At the end of the day, you're bringing new life into this world. That's something to celebrate.