Breastfeeding help

Destiny

I’m having trouble getting my daughter to latch again. She is 4 days old. I tried so hard to breastfeed in the hospital but she wasn’t having anything to do with it. So I give her formula and kept trying by pumping and wouldn’t even get a little drop. I didn’t make enough for her but now that my milk has came in she won’t have anything to do with latching on. Has anybody else had this problem or have any tips?