Would it be safe/recommended to get breast implants after thyroidectomy due to thyroid cancer (2 years prior)?

Congratulations.If you're cleared by your medical doctor for surgery, and I see no reason why you would not be able to proceed with breast augmentation surgery. 

Yes, it is likely that you will be able to proceed, assuming your thyroid  hormone levels are well-controlled. Of course, the physicians who know you best will be your best resource when it comes to specific recommendations.  My best suggestion: select your plastic surgeon carefully and communicate your goals carefully as well.  Best wishes.

There is no problem with having breast augmentation after you have defeated thyroid cancer. Celebrate your victory over your cancer and have your augmentation.