Electra Townie 7D. This has a low step over, 7 speeds, and "Flat foot" geometry so you can put your feet down at a stop, but still have proper leg extension when you pedal. Very comfortable and will have plenty of room for your awesome baby belly. Townies are popular for Xtracycle conversions too, so you could have a family cruiser that can last you for a several years for under $1000.