Hello, Thanks for letting us know your health concern. In the current scenario, your chances of conception are very low. You had a negative HPT and also a negative sonogram, which is mostly confirmatory. You seem to be experiencing some hormone imbalance and so having breakthrough bleeding. If the blood test also is negative, you can be prescribed progesterones for a cycle to correct the deficiency and set the cycles back on track. Infections also have to be ruled out as a cause. Hope this helps.