Ay, hindi ko sure kung normal yan sis kasi usually sa first trimester ang common pains ay sa lower belly, lower back, or chest lang dahil sa hormonal changes, pero ang forearm pain na parang may fracture feel ay medyo unusual, so mas better na ipakita mo sa OB mo, lalo na kung bigla nalang lumabas without any trauma. One of my mum friends din nag-experience ng random joint pains sa pregnancy at sinabi ng doctor niya it was just the hormones loosening her ligaments, pero kailangan talaga ma-rule out ang iba para peace of mind mo, especially first time around! Get it checked out agad lang para sure, okay?