Lifted a 1220 pound trailer by my self and moved it. can this cause an anurisem in the brain? would i be already dead i did it about 1130 am

Ruptured aneurysms: It is unlikely that lifting something heavy would cause an aneurysm but stressful activities have been known to cause existent aneurysms to rupture. Ruptured aneurysms often present with abrupt onset of an awful headache with other symptoms varying from minor to coma to death.

No at all: Aneurysms are not caused by lifting heavy objects, but you have a large one already and strain mightily, it could rupture. Sounds instead you escaped unscathed.