It's still early. You're supply will eventually increase. But in the meantime, massage your breast especially when in the shower letting warm water run on them, that helps. And drink plenty of water. The more you feed and hand express, the more your supply will increase. Good luck!

Don't use fenugreek. While it may help some mothers, there is a big risk that it will lower your supply.
Also, your supply most likely isn't low to begin with.
A pump can't tell you how much milk you actually make. A pump cannot get milk out of your breast as effectively as your baby can.
Also, your baby is a week old. His belly is the size of like a walnut. He doesn't need very much milk per feeding. If you nurse/pump on demand, you will have what you need.

@beebaby, I’m doing both but he doesn’t stay latched for long and gets fussy after a few minutes