Ay, hindi ako familiar sa specific clinics around Boundary area kasi kami sa ibang parte lang, pero try mo mag-ask sa local Mom Facebook groups for San Pedro, they're usually super helpful with recommendations na malapit talaga sa inyo! A few of us din usually just go sa bigger diagnostic centers like Chong Hua or St. Luke's if available, pero if you want something closer, the local moms there would definitely know better which clinics have good ultrasound machines at labs.