Trouble gaining weight

Ladies I need some help. Lately I've been feeling super self conscious of my body. I'm naturally thin. I'm 5'3'' and usually weigh 95-99 lbs. But I have now gone down to 93 lbs. I was not comfortable being 95, but now I'm even lower.. I absolutely hate the way I look naked. My hips poke out, what little boobs I had are almost gone, you can see my ribs, and my collar bone/ shoulders is too boney. 
I just need some tips please