Slight setback

I trained last week the day after playing volleyball(Sunday vb, Monday lift). Had a good workout. On Wednesday I squat cleaned, it was some work but ok. Either Wednesday nite or some time Thursday I had some back spasms. Haven't had those in a while. Friday did a lite workout mostly in the sagittal plane. But when I played vb on Sunday some more spasms. Took the week off and saw Dr B. Working on flexibility and core, feeling better, Looking forward to next week.