Hi Kala,
I was diagnosed with Stage 1 endo in July this year. They can only diagnose it with a Laparoscopic Surgery, my gynaecologist made 3 small incisions, she also checked if my tubes are open. After the surgery you will have some discomfort and pain due to the gas, I mostly had pain in my shoulder and a warm bean bag does wonders!!! You should also take it very easy for about 2 weeks or 4 weeks, no hanging of washing and so forth (just google)
I am glad that I went for the surgery and that I got diagnosed.
Please let me know if you need any more information