Help!!! Pregnant or?!


So August is almost ending and i am yet to have my period. My period is always in the beginning of the month, the calendar said the 3rd i was going to get my period. Normal on the calendar i start a day or two before. I took a pregnancy test a two weeks after i missed my period and i got a faint positive. I took one a week later and got a negative. My body is aching. I was throwing up and not able to hold food down, didn’t have much of appetite either. My breast are very sensitive and sore. I feel like there is a little bit pressure in my lower stomach. Something i get these weird cramps not like period cramps but like get a cramp for like a second and then it is gone. Idk what is wrong with me. Are these pregnant symptoms??