Back Pain Help!

Bree • I`m 27 yrs old and have one son (8). I just had our second. Not sure if we're done or not.
I'm 26+5. I was bent over washing my face. Felt like the baby make have kicked me. But I have a really bad pain in my back right now. It is fairly consistent and is making dizzy. She seems to be a active. This not labor is it? I didn't experience it with my first. Should I go to ER?