My doctor has been trying to solve this mystery for about a month now and its finally being ruled as ectopic. She said I need to go in tomorrow for a methotrexate injection. I know about the blood work required afterwards, and I know there is the possibility of needing multiple injections. What I dont know is how I can expect to feel after receiving the injection. I've read of the possible side effects, but I was hoping some of you may be willing to share your personal experiences to give me a better idea of the possibilities of what I might be dealing with after the fact.