Feeling discouraged

I’ll 11 days post partum and really feel like I’m struggling . Breast feeding left me with cracked bloody nipples. Then I️ decide to add formula, pump, and breastfeed once they healed. I️ finally felt successful. Last night I woke up with mastitis, chills, fever, aches , and a lot of pain in my left breast. Everyone keeps saying it will get better but I’m almost at the point I️ should just do formula. I️ am exhausted and cry all the time. Any advice