I'm 28 weeks pregnant and have bad headache dizziness and blurred vision could this be preeclampsia? Had this in last pregnancy.

Get eval. With your history of pre-eclampsia, you need to get an evaluation to check your blood pressure and symptoms. Call your dr to discus asap. Best wishes.
Possible. Please call your OB asap so u can be evaluated , you should have already contacted your OB before asking that ? Here.