Hi Emily,
I just got really sick after taking fish oil. I wasn't so bad on the 1st and 2nd day, but after the 3rd day of taking it I didn't sleep at all, I was anxious, depressed, went off my food for 3 days - it was horrible. I almost quit my job thinking I was going mad! 48hrs after I stopped taking the fish oil I was fine!
Well mentally - 2 weeks later and my stomach is not back to 100%. Hope that helps! Jason