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Deadlifts and Pulled Hamstrings

So i pulled my hamstring about 3 months ago. The pain completely disappeared about a month and half ago, and ive only just got back into hamstring stuff this week. So i was deadlifting yesterday and my hamstring started feeling a little bit painfull (similar to the original injury but the pain isnt as bad).

My question is did i reinjure the area or is it normal to expect a bit of pain now that im restarting hamstring workouts? thx