Everyone loves a pregnant woman. (Proof: Stranger patting your belly on the el.)Make it a swell 40 weeks with the help of these maternity services.Stay in tip-top shape as you round out with You Grow Girl Fitness (sessions start at $100 per hour). Personal trainer Jen Dixon guides moms-to-be through stretches, cardio, and strength-training exercises in their homes, outside, or at a gym. Follow up with her postpartum to transition back to your old, nonjiggly self.Bum Bul Bee Photo + Films creates short films documenting life before and after baby ($750). Shutterbug Ashbey Riley comes to you to capture HD video, then syncs the footage to music to create a vignette available on DVD and for online sharing.Safety comes first, so set your protective eyes on classes from Chicago CPR ($35 per person). In a small group, you’ll learn to handle infant choking and pick up tips on SIDS prevention, poison control, and car seat safety.Baby will need a wardrobe. Go easy on your budget and the environment with a subscription to Good Karma Clothing for Kids ($20-$45 per month). The local service delivers bundles of gently worn clothes to your door (brands commonly include Janie and Jack, Tea Collection, and BabyGap). When they’re outgrown, return them for a new batch.It’s just the bump you need.Photo: John Lund / Sam Diephuis / Getty Images BUYThumb & Pinky ClothingWhat: Dress the kids for sunshiney days in the locally designed line of tunics, skirts, shirts, vests, and more.Why: Fun Marimekko and African wax print fabrics are perfect for vacay.When: The temperature hits 70 degrees (again!).Where: Online at etsy.com.EXPLOREMythBusters: the Explosive ExhibitionWhat: Make like one of the Discovery Channel gurus and uncover truths behind science’s popular myths at the hands-on exhibit.Why: Find out if running in the rain will keep you drier than walking.When: Thru Sept. 3.Where: Museum of Science and Industry, 5700 S. Lake Shore Dr., at 57th St. (773-684-1414). Children, $17; adults, $23.HUNTSoldier Field Spring Egg-StravaganzaWhat: Look for colored eggs and get down to a Radio Disney show.Why: A candy grab for kids 10 and under.When: Sat., 9 a.m.-noon.Where: 1410 S. Museum Campus Dr., at McFetridge Dr. (312-235-7000). Admission is free.