Albacore tuna

Hi. I'm 5 weeks and 5 days today, and last night had a craving for tuna so I had a 2ounce can of albacore tuna. I'm reading online it's safe if you consume less than 4ounces per week, but it still makes me question my decision of giving in to my cravings. Should I worry? Is my baby safe?

Thanks for any comment or feedback!