My boyfriend sucked & bit my nipples pretty hard 2 weeks ago & they got pretty infected & i've been applying vaseline but they're still pretty scabbed up & the tip of my right nipple looks like the skin peeled off or something. what should i do?

Rash : Rashes need to be seen to be diagnosed. If you have an infection you may need antibiotics

See below: You may apply triple antibiotic cream to the affected parts. If that does not start improving the lesion in a day or two, you should see a doctor to ascertain if systemic antibiotic is needed. Have a healthy diet, exercise 30 minutes/day, drink plenty of water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. Wish you good health!