Will I be convicted of Driving without insurance even though it was not on the citation?

I am assuming you are the owner of the car you were driving.  As you probably know, it is the law in Massachusetts to have insurance.  It is illegal to drive without it.  Assuming there was property damage to the other vehicle, the other owner would normally make a claim with your insurance company for payment.  Because you have no insurance, the claim will be made personally against you.  As for whether you will be in trouble criminally for driving without insurance, that is hard to say.  If the police did not cite you for it, you may be okay.  However, the other insurance company can report this information to the registry, which in turn could report this to the police.  I think you will have to wait and see.  In the meantime, I strongly advise you get insurance immediately for future incidents.