Am I pregnant?

Haley • Currently 18.. Trying for my first child with my fiance. (Ive worked with kids my whole life and have graduated high school and cosmetology school.) We`ve been trying for 2 months now and are hoping<3
Me and my fiance had sex on my most fertile day, but I can't remember if we did the day before or not. I have been nauseous, tired all day, have very tender breasts, head aches, and abnormal bowel movements... Is it likely I'm pregnant or just experiencing "pms" ?