3D / 4D ultrasounds ?

So , my husband finally agreed for us to get a 3d / 4 d ultrasound he told me to look for a place and make an appointment so I did , well I found a place and on the website it looks good but I read the reviews and half of them are bad . I was wondering what if I call my doctor and ask him if he recommends any places to go ? Also what if I go into a hospital and ask them if they do those type of ultrasounds and if they say yes can I just offer to pay them for it ? All I want is at least one picture :/ i'm due in a month and would love to see what my baby girl looks like ❤️ i'd also like a gender confirmation