Side Effects from Omega 3 supplements?

About 3 weeks ago I started to take one capsule of Seven Seas Simply Timeless Cod Liver Oil Capsule. Two weeks ago I also started to take a Vitamin D Supplement once a day. About a week ago I started having the following symptoms, Diarrhea, nausea, fatigue, headache, loss of appetite but I think this is caused by the nausea, increased anxiety. 

​Two days ago I stopped taking the supplements as I could think of no other reason as to what was causing this reaction other than introducing the vitamin supplements. 

​Has anyone suffered with similar? How long will it take for these side effects to ware off?

​Thanks in advance. 

Should be very fast...24 hours if it is the supplements.

It kind of just sounds like a stomach bug.

I would look at the ingredients and Google the coating on the capsule/pill...and make sure there's no artificial sweeteners. Most D helps calcium absorb. Haven't heard if the oil caus I ng problems except in extreme excess.

Honestly, if you still feel bad, I'd go get a blood test to see you vitamin levels. I am deficient, so I get a huge panal done 1-2 times a year. It's worth it to track ups and downs.

Why did you feel you needed the supplements? Maybe it's all related...also could be stress. Sounds like when I first had stress...I didn't believe I had it, but after treatment, it was very true. Hope you feel better.

I too think it sounds more like the stomach bug I had a couple of weeks ago.

I tried fish oils in the past and they always gave me a headache and upset stomach. Eating salmon also gives me a headache so I suspect I may have an allergy to fish. Do you feel OK if you eat fish? I now take flaxseed for Omega 3 and am fine with that. You can also get vitamin D from eggs and mushrooms as well as sunlight if you're lucky enough to get any!