I haven't got my period and im 29?

See your gyn doctor. If you are 29 and have never had a period, you need to be thoroughly evaluated.
Need evaluation. There are individuals that appear to develop normally but the internal plumbing is incomplete or not hooked up. Whether or not this might be the case can only be determined if you have a proper evaluation done. You can start with your regular doc & they would know who in the area would be best to help.