2 months late and negative pregnancy test?

A miscarriage doesnt make you infertile. After miscarriage periods can be irregular. You might not be pregnant, your body might be trying to adjust after miscarriage. This might take up to a year. Did you have regular periods after that? Also the pregnancy test might be wrong, go to a doctor and ask him for more info on this. Are you maybe under a lot of stress or have you been traveling? This might be the reason of your delayed period.