What can happen if I stop androgel hormone treatment?

Very Little. Androgel is a topical testosterone preparation used to treat low testosterone in men. Any use in women is off lable and not approved bu the fda. You were likely using it to treat a decreased libido (sex drive). There should be no risks from abruptly stopping it but you should confirm the reason you were perscribed the medication and consult with the physician who perscribed.