Fish Oil and Caffeine

I’m new to this forum,so I was wondering:I’ve read where caffeine affects flax oils’ conversion into epa/dha,does it negatively affect fish oil in any way?

One more thing,how much does ones’ bodyweight vary throughout the day?I know,for example,if I weigh myself immediately after rising in the morning I’m dehydrated so I’ll probably weigh more later in the day.So,on average,how much more than that number would my actual weight be?Thanks guys.

Thats the BEAUTY of fish oil it doesnt need to be converted. Caf. in moderation should be all good.

Weight I can vary by as much as 10 lbs morning to night.