I am 26. Several months ago little red bumps started popping up on my upper arms. Where are they coming from and how can I get rid of them?

Need to know dx. These lesions need to be visualized & a history needs to be obtained in order to make an accurate diagnosis. Sometimes lab testing or biopsy is necessary.
ARM BUMPS. Difficult to know without seeing these bumps. If they do not itch, it could be a harmless condition called keratosis pilaris. An over-the-counter cream that you can try is amlactin (no financial interest!) if it doesn't get better, see a dermatologist.