Bloating, cramps, stomach pains, headache, backpain, some days wake up in a bad mood? last 2 periods were 36 days apart so should start in one week?

PMS/PMDD: It is possible that you are experiencing premenstrual disphoric disorder (pmdd--formerly known as pms), which is quite common. Motrin/aleve are good options for cramps/headaches etc.. If the mood is bothersome to u, it probably bothers others even more, so consult doc for some help/treatment. The pills will likely help regulate your period and other meds(prozac/zolfoft etc..) for mood. Good luck.