Hai mama! At 9 weeks, leg cramps and stiffness are pretty common, hormones are loosening everything up and your body's carrying extra weight, so the muscles kena tension. A few of us pregnant mums experienced the same thing, and stretching regularly, staying hydrated, and making sure you're getting enough magnesium really helped, but best to mention it to your doctor at your next checkup just to rule out anything else and get their peace of mind lah!