I'm only 5 weeks and haven't had any symptoms yet but with my son, I barely had any. From about 7/8 weeks, I started to get really tired in the evenings and my boobs were a little tender but that's all I had. I'd occasionally feel a tiny bit sick for a few seconds and that was it. I think they say lack of morning sickness can mean you are pregnant with a boy? Unless I just made that up but it was true for me and my friend had severe morning sickness (was hospitalised with it!) and she had a girl. So perhaps that's it.
Some people don't get any symptoms. My sister never did with my niece but it just always makes you worry when you don't. I'm sure everything is just fine though and probably just enjoy the lack of symptoms I guess x