You can just unlock the gallery using the code from the OP, scene with pregnancy is usually mark with A/B/C to denote the different stages of pregnancy.
I've tried restarting, and I still get stuck at Natalie 10, where you have to "talk to her the next day" about the camping trip, and Ted Bear is also at 6, where you have to GO on the trip... Can't talk to Natalie about it, and I've already done the camping trip multiple times.
I am having this same issue. I've done the camping trip multiple times, listened to all the stories and selected all options, all puzzles finished. Done it both days for 2 weekends straight. The quest doesn't advance, and thus I'm more importantly stuck with Natalie as her next step is to play it cool and go on the camping trip with her. I'm at a total loss for what else to try.