Hello, Im new to the forum hope this question is in the right place. after giving myself a IM injection oil based I became dizzy felt a strong pain in my chest. Within 10 seconds my chest felt like it was constricted and I could not even take the smallest breath, as I was about to lose consciousness my chest relaxed a little and I was able to start breathing again slowly in between coughs. I am sure it was an oil pulmonary embolisum caused by some oil running back through the needle hole and into a vein.(I always asperate before pushing the plunger down)I am now fine. My GP thinks it was probably what I diagnosed. My question is if it happened again what could I do to help clear the blockage would an epipen help? As this is a very scarey and life threatening acurrance I would really like some advice. Thank you very much.