Really need help!

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
For the past week, I've been experiencing abnormal body actions. Normally a week before my period i get tender breasts. A day before my period i get cramps. This has always happened no more and no less. This past week ive been going through: insomnia, cramps, constipation, diarrhea, loss of appetite, nausea like crazy, sore breasts, even stomach pains, hot and cold flashes, and fatigue.... Has anyone else had these symptoms before? And what did they turn out to be? Id love the help ladies (: