So here are some symptoms that I having the last week and a half my breasts have been tingling, tender to touch, swollen, I even wake up in the morning and they hurt! So I have a 4 year old and this is what happened when I found out I was pregnant with her! Now here are the complicated things, my fiancee of 3 1/2 years had a vasectomy around 14 years ago, we want to have a baby together and my daughter has been begging and praying for a baby brother, we figured we would try a vasectomy reversal when we were ready, so I have had the tenderness in my breasts along with lower back pain, some abdominal cramping, I have been nausiated lately and last week I thought that I would finally start my period because the metformin, but instead I had a little pink spotting and then nothing, and still have tender breasts, nipples are starting to look a little darker too! I was just wondering if this all could be associated with the metformin of could it possibly be pregnancy, my mother is always telling me that his vasectomy can reverse its self, if this is the case maybe I could be pregnant and this is because I have been taking the metformin or something I am clueless right now and confused!!!!