Hi, I Am Currently A Nursing Mother. I Have Had

Hi, I am currently a nursing mother. I have had one short period, but now this month when my period was do I have had cramps, bloating, fatigue, increased sense of smell, white discharge, and lower back pain along with some muscle soreness in the rest of my body. I though I was pregnant, but I am 3 days past my start date for my period and the tests are all negative still. Should I go see my doctor to try and figure out what's going on, or should I just wait to see if it goes away, or keep taking pregnancy tests?