Pregnancy of an Unknown Location?

Jessica
The doctor thinks this may be what's going on with me. Sonogram didn't show a baby, and my uterus, ovaries, and tubes all looked normal and healthy. However, my hcg is going up and every pregnancy test I've taken (at home or at the doctors office) is positive. 
If you have ever had an ectopic pregnancy or a pregnancy of an unknown location, what were your symptoms? What were your treatment options? Which option did you choose and why?