Hi. Thanks for your query. Noted your history of 22 years old female who has complaints of dizziness, light headedness, tinnitus and other symptoms on masturbation. You are not getting orgasm on penetration but get it only penetration. Yes, this is something to worry about as this is not a normal physiological occurrence. I would advise you the following: First of all to get an opinion of a gynecologist as an internal examination, tests for sensation, the reasons for this aberration should be sought after, It is possible that there may be a local cause or there may be some neurological problem related to the spinal nerves supplying the area and hence on instigation like external stimulation only on the outside can cause the symptoms that you have explained. Hence you need an MRI of the whole spine as well as of the pelvis. The treatment will obviously be as per the findings. IF required an appointment with a sex counselor may help is there is no organic problem.