hello. i am a 20 yr old male who has been experiencing intense headachs that last from 5 to 10 seconds. These headachs seem to only happen when i exert myself suddenly(like when standing up) and only sometimes. today i lost periferal vision in my right eye for about 20 minutes. this was accompanied by a constant headache. The headaches seem to be getting worse. occuring more frequently. I have no insurance and no money so am seeking help on here before i go to a doctor. if any ideas please let me know.