Uy mamsh, yan talaga ang normal pregnancy bloat lalo na kung maraming tubig at pagkain, nangyari rin yan sa akin around that time! But since you have marginal placenta previa and you're worried, mas okay talaga na i-mention mo lahat ng ito (the hardness, the bloating, everything) sa OB mo next visit or kahit mag-call ka na lang para peace of mind, especially habang naghihintay ng lab results mo. Your instinct is right na mag-check, kaya don't stress too much muna but do reach out na sa doc mo ha, okay? Ingat sa iyo at baby mo, September mama!