Do NOT do your estrogen injection when your muscles are sore.
Oh. My. FUCKING GOD.
Sorry for the language but… if you are on intramuscular injections and you do a lot of exercise, and get sore muscles… PLEASE just wait it out until the next day until your muscles aren’t sore, and I wasted a needle (actually just take Ibuprofen, nobody got time or energy for those mood swings leading up to your next injection)
I just got the worst cramp EVER from just sticking needle in, but oh well… lesson learned!