My periods used to be very regular, 38-40 days per cycle. now they arent. 38, 29, 29, 32, 38, 40, 34, 39, 35, 32, 38. (lengths if past year). normal?

Yes: It seems like, for the most part, you're averaging between 29 and 40 day cycle. I wouldn't be worried for a second, also considering that you're having a period every month. If it gets to the point where you start missing periods, then that would be a reason to be concerned, but the variation you describe strikes me as perfectly normal. I think you're okay.