Normal yan, mama, a lot of us experience mild cramping and back pain around that stage kaya don't panic, but since you're pregnant, mas better to mention it sa OB mo sa next check-up para ma-rule out anything serious, okay? The back pain especially tends to kick in dahil sa weight at posture changes, pero important pa rin na i-confirm with your doctor na lahat's good with baby. Maingat lang tayo sa pregnancy!