Massage & scared.

Okay so tonight I got a massage. I'm 30 weeks on Tuesday and not big at all, and can comfortably lay on my stomach and sleep still and everything. Well the lady did a table massage and I was laying face down due to horrible back pain. The massage felt great during and I felt very relaxed but then I noticed my back started hurting again when it was over with. Now I'm worried that I hurt the baby and real paranoid about it.