Bed pillow symptoms and conditions

I'm 43 years old, 5'3" and weigh 165lbs. My doctor started me with Zocor 40mg. I stopped sleeping through the night about a week after taking it, but thought it was work/stress related. About 2 weeks after taking it, I could only sleep for about 3-4 hours, wake up, and then lay about another 2-3 hours hoping for sleep again. I didn't think any of this was drug related. After two months of insomnia, I began suffering very bad neck and back pain. It felt like someone stabbed me in my spine and it was excrutiating to roll over or get out of bed. I thought maybe it was my bed/pillow. I ran out of Zocor and my symptoms went away in about a week. I figured this was all stress related. After a month off, my doctor insisted on increasing my dosage to 80mg. Within 2 weeks of the increased dosage, the insomnia returned, my eye developed a "twitch," and I started feeling pains/aches again in my neck, shoulder and back. I refuse to take this drug further.