Aww, jangan risau sangat! Back pain in early pregnancy memang very common, hormones like relaxin are already loosening your ligaments, so that's normal. But since you jatuh tangga 4 bulan yang lalu, I think it's best you check with your doctor or midwife to make sure everything's okay and to rule out any injury dari the fall, especially now that you're pregnant. A few of my mum friends also had back pain early on yang hilang after a few weeks, but some needed physio, your doc boleh recommend what's safest for you and baby right now. Hang in there, mama!