If you have already found out the gender i highly doubt they'll do another ultrasound unless they think something is wrong. That's how most doctors are, but some do give you another unsound. Ask your doc. He'll let you know and if he says no, you could always go pay for one that's not at the doctor. (:
Oh n we dont get another scan either, unless theres something wrong or ur paying at a private place! (In the uk)
Im 26w + 3 too :) in the uk we see our midwife next at 28 weeks, dont see a doc unless somethings wrong! Im seeing my midwife at 28w+4 because ive got to have my anti D injection at 28w at the maternity unit!