What should I do with my blotchy skin?

See a dermatologist. You need to see a dermatologist for evaluation and treatment.
Many options. Blotchy skin can be caused by sun damage, freckling, broken blood vessels, acne, or reactions to medications such as birth control or hormones. It can also be caused by underlying skin conditions such as eczema or rosacea. Treating the underlying skin disease, topical creams, or laser and ipl treatments can help. Consider lasers that target blood vessels and pigment.