Hello, I am 21 years old. I normally had a 7 day period since I was 11. About a year and a half ago in spring 2016, my period was 3 days long. Over the next year it gradually increased to 5 days long. It has been about 5 days long now since spring 2017. I was wondering if I should be concerned or not. Also since spring of this year, most of the time, during my ovulation period, I have been having sharp pains in my sides as well. My mother had cancer in her uterus and had to have a hysterectomy.