You can have as much seafood as you want. Just stay away from sushi (sashimi), shark, swordfish, and tuna. Eat shrimp in moderation.
there are some seafoods you have to stay away from such as shark or swordfish due to high mercury levels. Other seafoods they suggest no more than 8-12 oz a week. If you google it you can get complete list of safe and unsafe seafoods.
Yes you can just not too much shrimp or seafood.