Post-injection pass out by elevins | Apr 20, 2014 | 3yrs-4yrs Old I got my methotrexate injection, and mommy & daddy thought it would be difficult to get me to go to sleep. I passed out in their bed shortly after my shot – it was a long day. Related Posts YummyMommy makes yummy dinners. DancingLook at me I'm dancing. PostPosty post post post post.