Hi I am a 32 yr old mother of two. After having my third child a still born my husband and I decided for tubal ligation. That was 3 1/2 yrs ago. I so badly regret maken that decision. Last yr I found out I had thyroid cancer and had my thyroid removed. All of it and am on meds to keep my thyroid levels leveled. My period is like clock work and has been for all of my thyroid problems. I am now three days late for my period and when I squeeze my nipples milky stuff comes out. Could I be pregnant? I have taken two pregnancy test from Dollar general and both are negative