My midwife mentioned once that I'd be doing 2 week appointments in the third tri. My next appt. is at 26 weeks, so I'd imagine I'll start after that? She hasn't said anything since then, so I'm not totally sure.
I'm starting them now, at 30 weeks. I had an appt. yesterday and my next appt. will be in the middle of June. I kinda wanted to keep them at 3 weeks, but I'm okay with every 2 weeks until 36 weeks, then every week.