Your hCG levels are doubling nicely. Since pregnancy dates are often off, I would be leery of ending a wanted pregnancy if they are not certain it is ectopic and cannot see anything in the tube. Does your doctor state why he thinks it is ectopic? With your hCG levels increasing nicely and nothing visualized in the tubes, I would be more inclined to watch (very carefully) and wait. I have had two ectopic pregnancies, and both had hCG levels that increased very slowly (never doubling). While the first one was never visualized, extra fluid could be seen in the ovarian area. I would, at the very least, seek a second opinion on the matter from a different physician. It is possible it is ectopic, and that is a life-threatening emergency, but since the hormone levels are doubling and there are no visual signs of an ectopic, a second opinion is warranted.