I'm 15 days over my period, I've taken multiple test all have come back negative. Have had low back pain and cramping here and there and constipation as well. In the past 15 days I've noticed a small increase in discharge. I don't have insurance and recently got laid off so money to go to a doctor isn't really a available for me right now.. my cycles range 28-33 days normally on time I keep track of it very well.