I really want to know the sex

Okay so I am 26weeks pregnant. I don't know what I'm having. This is the most frustrating thing I have ever had to deal with because I don't like surprises... I went to one doctor and they told me I'm having a girl , than I switched to a more convenient doctor for me and they told me it was a boy. The second tech wasn't too sure on her analysts so I true don't believe here. I've asked my actual Doctor could they give me another ultrasound so I could know what I'm having and she basically told me no. Omg im going crazy and my partner & family really want to know what I'm expecting