Is there something wrong with me?

I'm 15 and have very regular periods etc. 
Anyway my cramping has been so so bad lately and I was just vomitting like 10 mins ago. Also my periods tend to last like 9/10 days... 
Is this weird?
Due to complications I was only on the pill for a month and it completely wrecked up stuff so I can't go on it  
What should I do if it's abnormal?