Could you be pregnant if have spotting last month instead of having regular periods but urine test come out to negative?

It is possible to be pregnant even if you had spotting last month instead of your regular period and your urine test came out negative. There are a few reasons why this could be the case:

1. Implantation bleeding: Some women experience light bleeding or spotting when the fertilized egg implants in the lining of the uterus. This is one of the earliest signs of pregnancy and can occur around the time you would expect your period. Implantation bleeding is usually lighter than a regular period and lasts for a shorter duration.

2. Hormonal changes: Early in pregnancy, your body is undergoing significant hormonal changes which can affect your menstrual cycle. Sometimes, these changes can cause irregular bleeding or spotting.

3. Missed miscarriage: In some cases, a woman may experience spotting instead of a regular period, but may actually be having a miscarriage. This is when the fertilized egg implants in the uterus but fails to develop.

You could be experiencing these symptoms for other reasons besides pregnancy, and the reasons you have mentioned have also occurred.