Congratulations on your pregnancy!!
I remember feeling sick in the first couple of days after getting my BFP, not sure why but it eased up until about 7.5 weeks and I'm now starting to feel great again. I was worried I was going to get it quite bad again as with DS, it started at 5 weeks and didn't let up until 18 weeks!
Some women do get bad ms early on, but it is totally worth it and you forget you were even sick when you start to feel better!
Good luck! Ginger flavoured EVERYTHING is now your best friend.