never have had sex...played around...breasts are bigger..hel

i have never had sex...but i have played around where he has taken his penis and rubbed it against my vagina. he never came in me and he said he wouldnt.but i would find myself very wet.my breasts are a litlle bit bigger and i have this nausea feeling. i really dont know whata going on and i dont want to tell my mom. my period also starts in 2 weeks. please help :'(