Congratulations ladies! As someone at 37 weeks pregnant, I can tell you that you have a roller-coaster of a time ahead of you, but definitely an enjoyable one!
I personally had a little bit of implantation bleeding a few weeks before I took a pregnancy test. Then the nausea (no actual throwing up) was 24-7 for the first 3 months. People will tell you to eat better than you ever have in your life at this point but with nausea, the only advice that will help is eat what you can, when you can. Toast worked best for me; once I'd gotten past the awful smell, the taste helped. Do look up what foods you definitely shouldn't eat though, as this is the most important time to follow advice like that. Well done on not drinking or smoking also.
Also, buy/borrow/ask for whatever you need to make yourself feel comfortable, and get used to never actually being comfortable. My personal experience with needing new bras was that my boobs grew considerably in the first month or two, and then seemed to go back to my normal size! Any bras you get, be they daytime (always go for no underwire going forwards), night-time or even being prepared with nursing bras, always buy at least 1-3 cup sizes bigger, and ALWAYS get a larger back size than you need, as your ribs WILL expand and clothes WILL be tight around your ribs. M&S did a wonderful free bra-fitting for me and kitted me out with post-surgery bras at a discounted price (standard discount for post-surgery, apparently) and these bras have fitted me from week 7 - week 37!
As to not being able to sleep, try and see that as preparation for having your baby there with you ;) Naps may help instead of trying to get 8 hours at night, ginger or even plain biscuits before you get out of bed, comfier pj's maybe.
Absolutely no harm in doing as much research as possible about this trimester, and ask everyone and anyone questions - I found this forum amazing throughout my pregnancy. Research will help you so that you don't spend the next 9 months in constant fear, or go running to the midwife with every single little query.
Best of luck and enjoy!! x