Worried....

I just did my trigger shot. When I went to fill the syringe, I noticed there was a bubble at the top of it. When I tried to move the syringe forward, it was sticky, and some of the meds shot out. I am now freaking out that I am for sure not going to get enough meds. One side had a full dose and the other side was almost .2 less than that. What if I messed up the whole process because of the last shot? I just don't know what to do. To go through this whole thing and then to mess up on the last one? Barry says that I should not freak out about it, but it is hard not to when they kept saying how important this one shot is. I hope I did not screw up.