A few weeks back, while masturbating lying down on bed, the moment I felt like orgasm, i got a huge sudden headache, it was so bad I had to stop. The pain lingered for some time then stopped but I got so scared even to have sex thereafter. Late that week I also have recurring spondilitis, hence was taking rest, after almost 2 weeks, I thought of trying to masturbate once again. I got similar but milder version of that headache again. Now I am scared of bleeding in the brain or anyother major issue.