Lactose Intolerance - Diarrhoea, Nausea, Vomiting, Abdominal Cramps, Brain-fog, Anxiety Attacks

I have just been diagnosed with lactose intolerance. After, literally years of suffering, I finally have an answer to my problems. I was just wondering if anyone else out there has this and what you suffered? I mean, this seemingly little thing has caused me to become bedridden! I ate a diet LOADED with lactose prior to diagnosis and honestly felt like I was dying over the last two years in particular. I had severe diarrhoea, nausea, vomiting, abdominal cramps, brain-fog, anxiety attacks...the list goes on... I had my appendix out in Oct 2013 too, which I can't be sure was related, but it was horrendously painful any way!

The symptoms I had, I put down to various things and was convinced I had parasites, which I don't have. I just could not fathom why I was so ill. I had a food intolerance test and eggs came up positive, so I eliminated them from my diet at the time, but I had little relief as I was still eating a high-lactose diet, not knowing that I was intolerant. 

I have now eliminated all lactose AND eggs from my diet and in one day, I felt better. I had no abdominal pain, no urgency to poo, and no headache - which I have literally, constantly had for years. It's remarkable. I also didn't suffer bad dreams, which is so weird, as I have actually become used to my dreams being bad/negative and it became normal for me. It's such a relief to be able to rest without disruption!

Did or do any of you suffer with really bad symptoms down to lactose intolerance? Also, as I am new to this and have had to overhaul my diet, does anyone have advice on foods I should avoid, etc?

Thanks!