Blood in pio syringe

I did my PIO today myself, and I tried to pull it back a tiny bit and didn’t think I saw blood, but my syringes dark green, and then my shot hurt a little more than normal once inside, and bled a bunch when I pulled it out, and then I noticed of huge drop of blood in the syringe. Do you think this is a big deal? It stopped bleeding now, but I just wanna make sure all of the progesterone got in. It’s not puffy or anything and I rubbed it in good.