I am breast feeding my 9 month old son every 3-4 hours and I'm on the mini pill. I started menstruating when my son was 2 months old after starting the mini pill. I missed my period last month and have not had it yet this month. I've taken 4 pregnancy tests that all came back negative but haven't taken one in the last couple of weeks. Could I be pregnant? I was nauseated this morning, have been extremely tired, moody and sensitive to smells. I'm also bloated and cramping.