If you have no tubes, no you can not be pregnant. The tubes are vital in carrying the egg down to the uterus. Symptoms DO NOT mean you're pregnant--I've had "pregnancy" symptoms for 14 months, and I'm not pregnant. Half a dozen medical conditions can cause them.
i wouldnt actually think its possible for you to get pregnant with no tubes..... I had my right one removed a few years ago and was told id never conceive from that side.
I would contact your gp or gynea doc. Good luck!