Stressed and upset. ..long post

Ladies, I need to vent. We are pregnant with our third and over the moon about it, but a piece of me is beyond stressed. We have 2 amazing, healthy girls, hubby obviously wants his boy and I'm truly five with either. The problem is that my dh was so hurtful towards me when we found out our second was a girl. He was upset. Once she was 3 months old I couldn't take it anymore and told him he needed to get I've it and that we were blessed with two girls and it breaks my heart to see how he is treating our youngest. Fast forward to 3013, we had a miscarriage and decided after that to ttc. Long story short we went to a fertility clinic where I learned part of the miscarriage from 2013 didn't clear out and also that I had pcos. During this time dh had reassured me that if we had a girl he'd be happy. The doc told me we'd have to do an IUI to get pregnant. When we went to the financial lady to discuss it, dh and if there's a way to guarantee a boy. I lost it! On the way home I told him that I felt as though the weight of the world is on my shoulders with not getting pregnant and then still fearing his reaction if we have a girl. We didn't do iui and got pg on our own. I have my first u/s Monday and want to guess the sex using the Ramzi method, but I'm worried if it says girl. I know this is silly, but I hate feeling as though I let dh down since he truly is a great husband and father. Is anyone else going through something similar?