How far along? 18 weeks.
Size of baby: We've got a little sweet potato! Baby is now 5.6 inches and 6.7 ounces. You know, assuming s/he's average.
Sleep: Not much to report! This week I've gone to bed a little earlier than normal because I've been exhausted. Parent teacher conferences, anyone? And yet, on my day off today I still woke up at 5:30 as usual, despite turning my alarm off.
Total weight gain: If we start by my lowest weight at my OB's office (when I thought I lost 4 pounds), +8. 
Unglamorous body changes: Conversation from earlier this week:
Jacob: Are you getting something by your mouth? (I think he was referring to the possibility of a cold sore.)
Me: A zit.
Jacob: Well, at least you're not all break-y out-y over your forehead.
Me: Is that supposed to make me feel better?
Jacob: Yep!
Best moment this week: Tough call. Was it overhearing one of my students tell another that "Mrs. Erickson is so much better than (insert name of 3rd grade teacher)"? Having parents tell me how much their children are enjoying school? Hearing the heartbeat again today? Finally getting glasses? Not having to go to work today? Actually, going out to dinner with my sister Emily and hanging out with her afterward for the last time before she entered the MTC probably tops the list.
Movement: I'm still hesitant to label anything I feel as a result of baby moving, but I have been feeling little pulses in my lower abdomen here and there. 
Maternity clothes: Still wearing the belly band. Today I busted out a pair of jeans I haven't worn in ages because I would be able to take them off without unbuttoning them pre-pregnancy. And . . . they still slide off without unbuttoning. Score. 
Food cravings/aversions: Jacob and I get Costco rewards through our credit card, so we recently got a check in the mail. On Monday we used it to buy a cheesecake. Let's not mention that there are only 2 of us and the cheesecake weighs 5.5 pounds. We still have half of it left, but I do believe a piece is calling my name . . . 
Symptoms: Not much, really. (Other pregnant women who are having miserable pregnancies, please don't hurt me.)
Currently looking forward to: Finding out the gender! We originally had our anatomy ultrasound scheduled for today after my doctor's appointment, but when we scheduled it the receptionist "strongly encouraged" us to wait until 20 weeks. Earlier this week I rescheduled it for 2 weeks from today, based on that recommendation. And then my doctor told me he was surprised anyone told us because once you hit 18 weeks the ultrasounds are pretty accurate. So we have the green light to reschedule again! (I'm waiting for Jacob to wake up so we can figure out a time that works for both of us.) I hope they can squeeze us in soon! 
ETA: I originally wrote this post around 10:30 in the morning. At 3, when I bounded into the bedroom to wake Jacob up, we discussed when a good time would be to reschedule our ultrasound. Visions of getting in on Tuesday or Wednesday danced in my head. I called up the maternal diagnostic center, told the receptionist that our doctor said I could have the ultrasound at any point from today on, and was told AGAIN that they wanted to get as close to 20 weeks as possible. So they would've scheduled us only a couple days earlier, if that. Defeated, I said we'd just keep our current appointment and hung up. And then I dissolved into tears. Oh, the woe.
Realization of the week: So far our baby items include exactly the following: 2 outfits (neither of which are really gender neutral) and a toy that can hang from a car seat handle or play gym. We have a little person coming to stay in 5 months. Time to start shopping! 
Other tidbits: My doctor said that I'm pretty much a rockstar patient as far as blood pressure and weight gain and such. Everything is looking good! Baby's heart rate was 140 beats per minute. I could listen to that sound for minutes. (I'd say "hours", but let's be real, it might get a little bothersome after a while.)