Can colostrum be a sign of pregnancy

Kelcey

I had my second child February 2017. I breastfed her for 4 months. I stopped producing enough and didn’t leak anymore at all around 6mo. Up until like December I could squeeze my nipple and get a couple drops but that stopped completely and it hasn’t happened since December. Yesterday my breasts felt really heavy (they still do and actually have for a couple weeks I just actually realized it yesterday) so I tried squeezing and colostrum came out. The first time in months. Could this be a sign of pregnancy. I’ve been gaining weight recently and I feel off. But the last time I took a test (beginning of March) it was negative. Just curious if this is normal or if maybe I should take another test.