Will my vision worsen if pregnant if I have retinopathy?

Depends. What kind of retinopathy? If diabetic retinopathy, then its possible, but it depends on many factors.
Depends. It varies on the degree of retinopathy and the origins. Being a diabetic and predisposed to preeclampsia in pregnancy there is a chance to progress if diabetes is not well controlled . You should talk with a maternal fetal medicine specialist to discuss all this details and get accurate information.