help i think im pregnant im only 17 and dont no what to do 

im scared im pregnant i dont want to go to the docter cause im afraid its true and i hav missed my period and over the last few days iv had a bit of bleeding like its not my period its real light and smells kind of funny its a off colour as well i also sleep for about 16 hours with small gaps that im awake to eat and pee but than im asleep again and i eat so much i also cry fo apsolutly no reason can someone help?