My question involves criminal law for the state of: Texas

In 2011 I was accused of DV towards my wife. I was not arrested at the time and months later I found out I had a warrant. It has been 15 months since the incident and we are yet to have a trial. the DA keeps changing the pre trial date since they are not able to serve my now ex-wife. It has been three times that they have tried to serve her to no luck. What are the chances that my speedy trial rights will be violated if they keep changing the date to try to serve her? or have I waived those rights for not bringing it up? next pre trial is tentative for 4/22/13 it has been changed twice so far