Rebel Wilson got vulnerable with the world about her weight-loss journey. The Pitch Perfect alum, 43, took to Instagram on Monday, January 15, to give an update about her health and the complex emotions that have come along with it. “Working really hard has meant that, coz of all the stress, I’ve gained 14 kg’s (30 pounds)!” Wilson penned alongside a clip of herself hanging out in a hot tub while on a boat, rocking a black T-shirt and dark sunglasses. “It makes me feel bad about myself…it shouldn’t…but it does. I’m really proud of the work I’ve been doing on new movies and my memoir, it’s just…