Stressing out! (supply issues)

[b bright]

I'm just stressed I won't be able to breastfeed. This is my 4th kid and I did perfectly fine with the first 3 but it just feels like something is wrong/different about this time. I'm only 2.5 days pp so I know my milk hasn't came in yet but I keep freaking out its not going to. I pumped and got a measly 6 ml of colostrum total! I know a baby is a better "pump" anyways and can get more, but really....only 6 ml on day 2-3?? Why so little? (I was advised to pump by an LC I saw this morning about baby not being satisfied after coming off a boob.) why did I have oversupply issues with my others but can barely get anything with this one? I'm so sad. :/