Can I be sued for going to work for a competitor after I was told that "no action will be taken"

I worked with EDS for two years. I signed a non-compete with EDS however, worked for EHRO (Relocation Company) with EDS being the largest shareholder. When HP bought EDS, HP bought all shares of EHRO. EHRO has laid off 80% of its workforce and is up for sale so, I put my resume out there. I am now working for another (Relocation Company). I quit HP/EDS in November and worked on a project for them until this February to close-out a program. I was told by HR that they were aware that I moved on to a competitor however, were not going to pursue the non-compete. (The HR that told me thus is now “laid off”). Now that I have finished the program they agreed to pay me for my hours, now that I turned in my hours they are now throwing the "you work for a competitor” in my face; as if they don't want to compensate me for the work I did. My previous boss said she was unaware that I worked for a competitor all along and that others “have forgotten that fact” she basically in so many unsaid words said they are now pursing actions. My current employer is aware that I signed a non-compete agreement with my previous employer. I need advise if I should be looking for an attorney.