Uy, that sounds really uncomfortable, at 24 weeks pa lang, please check in with your OB soon, ha, para ma-assess nang maayos kung ano ang nangyayari. Puwedeng maraming reasons, pero kailangan niya makita personally para malaman ang tama. In the meantime, try to rest and avoid things na nakakapag-trigger ng pain, pero doctor visit talaga ang kailangan mo. Sending you comfort!