Fertility and cramping?

Lauren • M/C baby #1 in October 2015. TTC our rainbow baby. Married 10/15/11
My husband and I have been TTC for 1 month now and I am currently in my fertile window. We are BD like crazy and today I went for a run and started cramping around my ovarian area on my left side. Has anyone had this discomfort when ovulating or after having a lot of sex?