I had these two skin tags on my neck like 3 or 4 months ago then they formed to be what looks like 2 pimples the two pimples haven't gone away in months

Hard : Hard to tell without a clinical examination, but perhaps these are small boils or inflamed skin tags or maybe a small cyst? I would recommend you see a dermatologist for diagnosis and treatment options. Read more about these conditions at the link below. I hope that helps!

Achrocordon: The skin tags are harmless. Unless it is a cosmetic issue, you may leave these alone. These will fall off on their own in their own time. Wish you good health.