Gender?

Joanna • Happily married to the love of my life! Now have 4beautiful kids my blessings ❤️️ and expecting #5
At how many weeks can u see in an ultrasound the gender me n my husband are very anxious to know but at the same time are scared to shop because were still fairly early 13 weeks tmw but any of u guys know at how many weeks or have paid for a private scan?