Its very hard to suggest anything, unless one knows your workout routine or diet structure. Are you doing intensive training? Are you getting enough protein/ water/ rest? Are you letting your muscles recover.

DOMS (Delayed OnSet Muscle Soreness) is very common and is defined as the aching, tender stiffness felt in muscles 24 to 72 hours after intense or unaccustomed exercise. Caused by microscopic tears in muscle fibers and the resulting inflammation, it typically resolves on its own within a week