External oblique muscle got tighten. Me!

Actually on 3rd April after hitting my erected penis on the hard side pillow some tearing of lower part external oblique muscle right side. That time I don't understand what happened. So, I searching of the problem in the laptop lying on bed on the right side. After 10 days I feel pain in right side lower rib and feel some stretch in right side abdomen muscle.after few days the pain goes backside .now the my I feel upto spinal cord. I think new muscle formation of right abdomen is got tighten. It is already 4 months . Now I have problem to movement right and left. Muscle got tighten when walking sitting, walking and sleeping. It already 4 months still I am not recover. Tell me what to do and any medicine. Should I use heat and can apply a Ultrasound therapy in the right side external oblique muscle or physiotherapy work there . Is any scar tissue forming abdomen muscle. Please suggest me