I haven't gotten my period for a year, what's going on?

Should get checked. It is normal for not having period for 1 yr at age 30 if you have been having regular period etc... You would if you are pregnant by now, so that is not likely the case. Premature ovarian failure, thyroid disease, rapid/significant wt loss, or regular, prolonged/intensive exercises, or use of medications such as depo-provera etc...Consult doc. Good luck.