Help.

This is what I’ve been doing:

I start off every feed with breastfeeding. Then I finish off with formula because she never gets satisfied with the breast. And every time I feel awful for using formula. I’m on day 5, and my milk still hasn’t come in. I’ve started to pump. Baby cries and pulls away from breast A LOT. It’s honestly so upsetting that I don’t know what to do anymore.

What should I do?