I am breastfeeding my 5 month old son. About 3 or 4 weeks ago I began having all of the pregnancy symptoms that I had when I first conceived... Sore breasts and nipples, low back pain, fatigue, frequent urination. Plus I have had symptoms that I did not have wiggly first... Food aversions, nausea but still very hungry, sensitivity to smell. However, I had a negative blood test two weeks ago and have had several negative home pregnancy tests. What could be going on with me? I also just have that pregnant feeling that I had with the first.