Please comment...

So my fiance is hoping I mean so stuck on having a boy. Everytime I bring up that it could be a girls he starts with " no if it's a girl were returning here" being funny and completely joking. But as I come up on my second trimester am getting nervous. I feel like it's a lot of pressure on me and I just feel really emotional about it. What if we have girl but his reaction to finding out will hurt my feelings if it's not how I want it. Any advice? TIA