I found that my boy pregnancies were different from my girl one in strange ways. With my boys I had horrible insomnia and my back broke out like crazy. I hated it. Lol. With my girl I didn't have either of those symptoms, but I did gain heartburn and moodiness.
Overall, my nausea, cravings, and tiredness were the same for all three (this one has been a bit worse for both nausea and tiredness, but cravings are the same).
I will be very curious to find out what this one is. I do not have insomnia or back acne. I do have heartburn and moodiness. But I kinda think maybe its a trickster. Lol. I haven't had headaches with any of the pregnancies. All three of my first pregnancies I had sore boobs pretty early on and lasting til 10+ weeks. This time they weren't sore much, but itchy and my nipples were sensitive. I tease DH that if there was a third gender, I'd guess that this time ;)
I enjoy symptom guessing. I know it's not accurate and there are those who have completely opposite symptoms and have the same gender and those who have extremely similar pregnancies and opposite genders. But it's fun anyhow!