Prenatal activities

I am now at 23 weeks (5 months) and figuring I really need to start getting active now that my energy level has been back for the last month and I don't feel nauseous 24/7 but with my busy schedule at work, school & volunteering I keep putting it off.

I don't want to put it off much longer as I ONLY have 4 months left and I'm sure once the new year hits it will fly by, so I looked into different places that offered prenatal yoga online today, two places that I've heard good things about which also offer prenatal courses (Blue Moon & Birth Roots) and the third was a yoga studio I've gone to for hot yoga (Moksha Yoga). For some reason they love Mondays and Wednesdays for scheduling, although Birth Roots is offering a Sunday course but the session started at the beginning of November and is 6-8 weeks. One of my coworkers is due a few weeks after me and is also interested in doing it so I plan to call Blue Moon tomorrow and see if we can get into the Wednesday night sessions even though the first class was tonight, as well as see when their next prenatal course is after November as they have only posted that one. Although Wednesdays are pretty risky for me...maybe I need to do more research for other studios. Anyone have one to recommend?

I'm also wanting to start attending Aquafit at the YMCA again but their schedule doesn't seem to want to mesh with my availability! Basically Monday and Tuesday nights are out for me as I have Girl Guides on Mondays & my CMA group does case work on Tuesday nights. Wednesdays are always up in the air for me, once a month I have a district Girl Guide meeting and as commissioner I can't miss it, plus I'm currently back in charge of payroll (which we run weekly since we are a staffing company) and that runs Wednesdays so I tend to work late. Thursdays to Sundays are my ideal days but with the holiday season ramping up I'm losing my weekends as well.

Too many things!! Can you see why I'm always able to find a great excuse not to exercise? But excuses are all they are and I need to start committing, even if it means going during lunch.

Any other thoughts of activities I can take part in to get me back in 'shape' and not out of breath as I walk up the stairs to work every day? Not to mention help me not put on to much extra weight during my pregnancy.