Dear patient,
those raised lines that u are noticing usually do no cause any issues as such.
but the important thing is to remove the cause of it because on long term basis it may lead to a condition which be painful - due to frequent irritation and injury to Ur cheek tissues.
Next Steps
please rule out if u have increased tendency to clench or stress related clenching while sleeping, difficulty in maintaining your jaw position in a stable position for long, or jaw fatigue, or if your teeth are aligned , or if you have a traumatic bite,if u have partially erupted third molars..
Health Tips
if you have any of the above situation, its better you get the cause corrected from your preferred dentist. i would suggest you visit a Prosthodontist who would asses your occlusion and suggest the needful accordingly