 [ Symptoms ] how contagious is chlamydia my now ex bf tested positive and i am negative my bf and i were pregnant i lost the baby but not before i got tested for all std is which all came back negative my bf and i did not have sex after we found out i was pregnant but just last week he called and told me he was positive for chlamydia how likely is it that i did not get it if he had it when we had unprotected sex for 3 months [ Disease ] i have no way of blindly determining if your burn is now infected so if this is your concern you will need to see a medical provider for a hands on assessment there is nothing wrong with continuing the sulfa cream for a while longer since this is an antibiotic and you can use the aloe later if you want the pink underneath is typically normal and does not necessarily mean their is a secondary infection