What Are The Symptoms Of Endometriosis?

Female friend w/ out internet asked me to see what I find on this issue. She's almost 30 and only major medical issue that I know of that she has is Endometriosis. The following has been going on for the last week: frequent trips to the bathroom to urinate but no #2 and getting dizzy occasionally. She has no fever, cramps, or upset stomach. She's been drinking more water since she's been feeling dehydrated. Her period ended Saturday, 5 days ago. I know she's been under a fair amount of personal stress over the last few weeks. She's not sure if she needs to go and see a doctor or not about her not going #2 or give it a few more days. Any suggestion of what she could do would be helpful.