period is 10 days late.. help!

Okay so I live with my fiancé and as anyone can guess, we're sexually active. I'm freaking out because my period is 10 days late.. it was late last month too, but I got my period. My period still hasn't come this month yet. My boobs are sore, I'm having lots of discharge, having nausea, and I haven't really eaten anything the past two days. My fiancé doesn't think I'm pregnant because I always worry about this kind of thing, and I don't have any money to get a pregnancy test done... could I be pregnant? Help please. 😓