Sayang, since you're 20 weeks and having belly pain plus warmth when you touch your tummy, please go see your doctor or go to the clinic asap, don't wait okay. Bisa jadi banyak reasons, tapi doctor kena check properly to make sure baby okay. Jangan risau, tapi better safe than sorry lah, especially abdominal pain during pregnancy kena professional assessment. Minta hubby drive ke clinic hari ni kalau boleh!