The HSG test went well this morning. It hurt like a bitch, but only for a few minutes (thank you for your comments and the suggestion that I take ibuprofin, by the way). And my tube is, apparently, clear. So I'm going to try to be optimistic and hope to get pregnant this month.
The Boy taught M to say "happy birthday" today, and she was waiting outside the bathroom when I came out of the shower this morning to say it to me. It made my day. Now if I can only get her to say it to my sister on the phone tonight.