Period help

I'm really scaredy I miss my period for almost a month now and my feet are swollen, back is killing me, and I been having cramps. And cravings don't get me started. I never had sex and every body that I talk to ask me the famous question am I pregnant. I said no. Is there any reason y my feet would hurt since I miss my period. 😢😥 like every time I I wake up they feel swollen and hurt when I walk. Plz help me i don't know wat to do and I'm getting a pelvis exams this week. But is it anything to make it come on. My aunt said her remedy is a drink but that is crazy advice