Our symptoms sound so similar, it is uncanny! I also feel worst in the afternoon and evening. In fact, yesterday I lay down at 7 p.m. because I felt so nauseous and promptly fell asleep with my youngest son! I don't have to throw up, just feel queasy and nauseous. It is worst when I have just eaten something, which is the total opposite of my previous two pregnancies, when I always felt sick when my blood sugar was low and I constantly had to eat to feel better. I have noticed that it gets worse when I eat artificial stuff like canned soup or basically all the high-salt stuff that I used to avoid during the ig diet. I think eating small amounts helps, as well as staying with natural ingredients and healthy food. Warm teas like peppermint tea also help me a little. For some people, a homeopathic remedy called nux vomica also counters some of the morning sickness. You have to experiment a little.
As far as this being a girl sign - of course I am hopeful, too, because I am experiencing the opposite of my previous pregnancies, but to be honest, it does not convince me yet. My sister-in-law had the most awful morning sickness for nine months in her second pregnancy and she has two boys!