Is a tight and warm vagina a symptom of pregnancy?

I don't think an itchy vagina has anything to do with pregnancy. It sounds more like a yeast infections. Might want to see you MD. It sounds more like an infection like thrush. See a doctor. This is not a sign that you are pregnant. It could mean you have a yeast infection or the soap you use is too harsh. There are over the counter remedies available for yeast infections as well as soaps for sensitive skin. Be sure not to use scented feminine products as these can cause irritations as well. I would recommend making an appointment with a gynecologist you can confirm what is causing your problem.