How much fish oil omega 3 can one person take a day?

I heard it thins ur blood but on plus side can help anxiety/depression and be healthy too so fish oil in one pill is 1200 mg and vitamin d in same pill 1000 IU I read on back of th bottle it says three times a day after every meal. What if I happened to take 4 or 5 would it be bad.? Just asking I haven't takin 4 or 5.