Upset tummy while feeding

Jenn • ♐Mrs. CROSS ✝️

Hey! My son is 5 days old and I have been having a hard time feeding him. He hasn't completely latched yet, so I substitute a bottle but with breast milk, but it seems everytime I try to feed him he acts like he's in pain. He has hiccups almost everytime as well with a lot of gas. Does anyone know of any recommendations?? I was going to use gripe water but it says I can't use until he is 2 weeks old.