Felling kinda werid latley?

lets see i have been moving so i don't know when my last period was (opps i know thats a no no) i am 19 yrs to by the way. I am currently sittin down i am highly nausous or however u spell it i nearly slept from 12:30 to 10 this morning and agian from 11 till 2:15 i am nearly tired all day long. my are highly tender, i am unusually bloated. i am tired all the time and have been for the last week or longer.have had several headaches.and i eat very regularly and healthy