Do you track what you eat? I'm still relatively new to primal but when I started I had a tough time working out my macros. I have been recording everything I eat and drink on my fitness pall and I found it extremely helpful.
My understanding is that if you want your body to use fat for energy source you have to cut on carbs and keep the intake below 100g. (I try to go not higher than 75 on rest days, but if I work out a lot I'm ok with a little more)
If you have a high carb day then cut fat to minimum as your body will use carbs for energy while storing fat for later. It's specially difficult for us females - our bodies love to store fat (I 'm starting to doubt I will ever see my abs! - lol) Carbs are what our bodies prefer to use and any excess fat is always stored so you may also watch your calories. I don't mean any calorie restrictive diet but if you eat more than you burn you won't see any weight loss.