I think Primal is really cool because you sort of are re-teaching your body how to eat. I'm trying to lose currently because I gained a little bit too much in recovery but I'm doing it slowly and healthily. I've been Primal for 1-2 weeks.
I've stopped counting calories as much but I was counting carb grams just to stay below 100g/day. Just DON'T let it get obsessive. Don't let it become an extremist thing, allow yourself "cheats". Try to listen to your body and not by the clock or by the numbers on the scale/your head.
I'd say DON'T weigh in. I was weighing obsessively (5-6x a day) before I started Primal and now I feel so healthy and strong that I don't even feel the need to weigh in. I am gonna try every 3-4 days maximum.
Message me if you want to talk/vent!