She’s asking opinions and we’re providing them. I don’t need to be a doctor to know the symptoms of an infection and she doesn’t have them. As to allergies, if you look at the medical literature, the number of actual documented allergies is tiny. The chances that this is an allergy is close to zero. What many of us with years of experience getting tattoos have seen is tattoos like this caused by someone tattooing like they were using a jackhammer.
When the most likely explanation covers all of your symptoms, it’s probably the correct one.
Last, YOU don’t set the rules here. If you want to be the big cheese, start your own forum.