Well, I have to say, your story and my story are A LOT alike. My DH and I were married about 5 1/2 years ago. We decided then that we were ready to start trying. But it didn't happen. I, like you, was over weight, and decided that I needed to loose weight before having a baby, and hopefully that would make it easier to get pregnant. Well, I lost just shy of 100lbs as well! My DH actually had surgery on his knee after getting hurt at work. While at the surgery center, I picked up some kind of bug (the urgent care station was there as well). I was sick for 2 weeks, when the dr's finally gave me some antibotics. That with the fact the dr had switched my b/c as I was having a period for 2 weeks, was all that was needed. I missed my period on a sunday, so monday, I said to myself "time to get up and get my hopes shattered". I took a test, and it was positive. I went and bought more, they were positive. I still didn't believe it, so I asked the dr to order a blood test. POSITIVE. I figure I am about 8-9wks along now. My first appointment isn't until the day before Thanksgiving, but I tell the hubby all the time, other than a few minor effects, I don't feel pregnant. I am very tired, breast sore and enlarging (quickly) and pregnancy brain (boy have I had some dosies).
For the first 2 weeks or more of finding out, I wouldn't sleep, I couldn't do anything without thinking about the baby. I was freaking out, thinking I would be one of the women that would have a miscarriage for no reason. I cut myself off of reading those posts quickly! Instead of worrying about it, I just went to thinking about things like, the baby shower, and what life will be like when the baby is born. I still feel the anxiety, but it is mostly good now, that I can't wait to hold this little peanut in my hands. I can now go to sleep decently (actually last night, I went to bed at 8:30, woke up at 12am, stayed up til 1:20, then went back to bed til 8am!) I have told most of my immediate family, so I can have support, and after my first appt, we are planning on telling everyone else.
So in short, no and yes. It probably wont go away, but it should defiantly calm down enough that you can deal with it, and make sure you do so in a positive way!