HELP!!? GIRLS ONLY PLEASE?!!?!?!??!?

i think i might be getting my period soon but im not 100 percent sure. I have bad cramps and a lower stomache ache. I ffeel like im going to throw up and thats what my mom did before her periods when she was a kid. i feel like im getting it all the time. i have all the puberty symptoms (hair everywhere, cramps, mood swings, discharge ect.) Am i getting my period becuse my mom was 11 when she got hers..and im 11. Am i getting it soon? and if you think i am.. then when do you think ill get it??! thanks so much in advance (P.S. ive had discharge for 7 months)