I need to know?

me and my boyfriend have been together a year now and we have been having unprotected the whole time i havent became pregnant yet and i think that there is sumthing wrong with me well i have had tadpole looking things a couple days before my period a lot of time but now i think i might be pregnant well i have been having really bad headaches and ive been really sleepy like i cant control it and my heart beat has been beating really fast and i can feel it trow out my whole body i feel like i could eat allot but when i have food in front of me i start feeling sick i cant even smoke a cig without filling sick its not really the smell that much but yeah my have been really sensitive and they hurt like there growing ive been feeling constipated but i poo then i still fill that way ive been peeing like every hour and and ive been having a lot of uti's and i keep having cramping like symptoms too do u think im pregnant or what i need to know