<s>[INST] In 1994 I had a brain aneurysm clipped.  Symptoms were awful headaches.  The aneurysm didn't burst, but had leaked.  in 2009 I had gastric bypass and have had multiple hospitalizations since for mainly infections, the last being sepsis.  I've been vomiting the last month, several times per week and last week it was so violent it gave me a massive headache similar to the ones I had with my brain aneurysm.  Should I be concerned it could be another one? [/INST] Yes it is a matter of concern with your noticeable past history.. I suggest you should do a MRI or CECT brain after consulting with a neurophysician.. </s>