Happy but sad

I have 3 boys. All crazy, loving, energetic little characters. I love them with all my heart and soul. I am currently pregnant with my 4th and final baby. This pregnancy has been the hardest one yet. I have had horrible morning sickness and the thought of food is immediate gagging since 4 weeks pregnant. Dr shettols method, nub theory, skull theory, ramazi theory, and almost all old wives tale stated a girl, which is not only my husband and i, but everyone on both sides of our family wanted. I had a gender screening done and found out I'm pregnant with another boy, I was so shocked! When I told my kids they cried cause they wanted a sister, my husband was in disbelief, my mom told me she wants a grandaughter and I should try again, and me I'm still in disbelief. Everyone really thought I was having a girl. I really wanted my last baby to be a girl to have 3 older brothers to protect her, to have another girl besides me in the home. I wanted a princess to dress up and be able to do her hair. Don't get me wrong I'm happy I'm having a healthy baby but I'm a little sad that its not a girl. 4 boys! Oh my goodness!