I'm 20 and I've been on my period for one month straight. Plus I have sickle cell anemia. I did a 20 minute workout two days ago but my flow did not increase the next morning. Once I worked out last night, my flow increased the next morning. Plus I've been taking supplements and herbs to get energy in my body which are: Bee pollen, iron complex, Yarrow, and 2000mg Vitamin C.