Hii there
Thinking about the opposite sex is normal activity specially in the adolescents and young adults but having uncontrolled sexual thoughts about others which cause distress to u could be blasphemous thoughts which needs to be addressed. Delaying the expert help will lead to mental stress and disruption of normal day to day activities.
Next Steps
Consult a psychiatrist near u
Health Tips
Try to control by getting engaged in other plesaurable activities. Try to do deep breathing exercise when in state of excessive restlessness.