could it be postpartum depression?

For the past 2 times I have seen my family someone has said something to me as a joke and I started to cry....they think I'm just being over sensitive but I don't think it's funny to tease me for the way I parent or joke about me needing to lose weight even though I kno they are just this I sign of postpartum depression or is it just hormones? My baby is almost a month old