Is it normal to have no pain with periods and more problems.

Well ever since I was 13 I had my period like any other girl. But the thing is that I had no cramps,no bloating. nothing! just blood would come down and what not. Unlike my friends who always complained about their aching backs or painful cramps I felt nothing. I never told anyone really. Plus to make matters worst. my period is irregular. it goes one month and then skips a month and goes back. And i have my periods basically every other month. and they are 2 weeks long.Now to make matters worst my period skips another month. So i havent have my period for TWO months and its really worrying me.Now some people might say its a damn blessing but i think im a bit weird since this has happened. i just want a "normal" period.