Gender disappointment (yes, I know I’m a bad person)

I have two boys who I love more than anything in the world. All I can think about now though is trying for a girl and how much I desperately want a daughter. I live in the uk and have even been looking up ivf gender selection and travelling to the US to have it.... not that we have the money (and I’m pretty sure I would never actually do it). I guess I just wondered if there were any others feeling similarly? I also feel like I am being totally unreasonable to be feeling this... my boys are gorgeous, healthy and we got pregnant very easily. I know I am incredibly lucky and maybe need a good talking to for being so ungrateful?!? Please feel free to be as harsh or honest as you think necessary.....