<s>[INST] I am getting a tingling sensation in the top right side of my head, it only happens when IM laying down or waking up in the morning. I m now getting a fluttering feeling like a tapping on the back right side of my head. I no longer like having sex because after a orgasm it feels like someone is squeezing my brain. I made a appointment with my PCP because I m afraid I may have an aneurysm. [/INST] Hello! Welcome on Chat Doctor! Regarding your concern, I would explain that your symptoms seem to be related to tension type headache or post-coital headache. I recommend consulting with a neurologist for a careful physical check up. A brain MRI would help exclude possible intracranial lesions that may mimic these symptoms. A close monitoring of your blood pressure values is also helpful to exclude possible blood pressure fluctuations, which can cause similar symptoms. Hope you will find this answer helpful! Best wishes,  </s>