2nd time moms: did you get the syntocinon injection?

So its basically oxytocin which is injected in you immediately after birth to reduce the risk of excessive blood loss. If you did get it were there any side effects?

Since weekly appointments I feel like doctors are trying to pressure me into getting it when I’ve already signed a form saying I don’t want it unless it’s totally necessary at the time of delivery. Now I’m feeling like I should get it.

I’ve always been wary of injections or vaccines, even just taking Tylenol. I hate putting drugs in my body.