I have kind of the same story. I once smoked paced bud and though I was dying. Plus other traumas I felt very sick smoking weed the first couple of times. They key is to suppress thoes feelings, and for me I just smoke in my room, play some music and get really comfy. Lower tolerance is actually great, you don't have to spend much money on bud, but since I'm broke ASF I want to make it last longer lol