Alamak, I understand why you're worried! Okay so brown spotting at 21 weeks is actually quite common and honestly, the fact that your scan came back okay is really good news, that's the most important thing. But here's the thing: since your doc referred you to the hospital, I think it's better to go lah, even if it feels fine now. Someone in my mum group mentioned that sometimes doctors refer you not because it's emergency, but because they want specialist confirmation, especially if there's any minor finding they want to rule out, better safe than sorry, kan? The abdominal ache could be from the overwork you did (ligament stretching, uterus stuff), but paired with spotting it's worth getting checked properly. Go to the hospital, get peace of mind, and rest up, your baby needs you to chill, not stress yourself out with the what-ifs. Definitely mention the cramping to the hospital specialist too when you go. Take care, and I hope everything goes smoothly!
ikut saranan doktor, refer hospital