Freaking Out - Can I Do This??

From the minute I got my first BFP 15 years ago I've wanted a son. I ended up having 3 daughters over the next 6 years. Of course I love them all more than anything in the world, and I was happy being a girl mom. My ex-husband didn't want more kids, and although I did, I was happy keeping our family how it was.

When I met my fiancé he had a daughter, but never wanted more kids. He knew I did, and would watch me looking at baby pictures and videos online, just dreaming about having my little boy. Finally last winter he told me that he wanted to give me a baby. He said that he didn't want more kids with his ex because he didn't love her, and was also afraid he would never love another child like he does his daughter. I asked what changed his mind. He said spending so much time with all our girls he realized that your love just grows, it doesn't divide, and he thought I was a wonderful mother and wanted to have a baby with me. He said the look on my face when I was looking at babies broke his heart and he wanted to be the one to put my smile back.

I had my IUD out in November, and the doctor said with my irregular periods, my age (34, my fiancé is 25), other health problems (fibromyalgia, CFS, depression), and the fact that we wanted to try Shettles for a boy, it would be at least 6 months before he expected a positive test. By February (my second cycle after IUD) we got our BFP. I was in shock. My fiancé was in shock. My doctor was in shock.

May 11, we had our anatomy scan and planned on finding out the gender. The first thing the tech sees is baby's legs, wide open, just waiting for us to see his winky. We are having our boy! Which has now been confirmed by 3 different techs after 3 separate ultrasounds.

(His winky looks like a puppy snoot 😂)

Here is where I'm starting to freak out. I know how to raise girls. I've been doing it for almost 15 years now. I'm so scared that I won't know how to help my son, or what advice to give him. I also haven't had a baby in 9 years, what if I can't do this again? I'm older and my health kinda sucks, what if I can't be as good of a mom as he deserves? I just want to give him the world, and I'm so afraid of failing. My fiancé is a wonderful man, but just blows off my concerns because "you're a wonderful mother". Am I just overthinking things? Any advice?