If you're just a few weeks in, you could still be having some "low carb flu" issues.

In my case though, to answer your question, I never feel "heavy" from fat/protein. I definitely bloat and feel heavy from starches (much less so from fruit.) Your tolerance for carbs is going to be unique to you--for me, you're eating too many carbs but others are very successful eating a higher percentage of carbs than you described.

You could try going zero carb for a couple days to see how you feel; if you feel better, be very slow and careful about gradually reintroducing carbs until you reach the right level for YOU.