Can anyone explain to me what this tingling sensation is when I go to the toilet for a wee?I even have it an hour or so after going to the toilet? Is this a common water infection or something else and can it be due to anything as me and my partner are trying for a baby?

It could be the start of a infection. If it did not go away in a few days or became worse I would see a doctor. Also try and drink plenty of water.

bushg is right. Go do the doctor if it does not go away, or gets worse. Along with water, drink some cranberry juice :)