In the current scenario, you should get a serum beta-hCG
titre estimation along with a trans-vaginal sonogram to make sure that you are not pregnant. Early home pregnancy
tests may not always read positive. Blood test
and the sonogram are always confirmatory. Please consult your gynecologist for a complete evaluation and further management. You could be in the per-menstrual phase as your symptoms suggest. Hope you find this information useful. Wish you good health.