Sayang, back pain and groin pain memang boleh happen during pregnancy, tapi sebab ni sensitive area dan you're still early, please go see your doctor or call your clinic ASAP to make sure everything okay. Don't wait, better safe than sorry, ya? Paling penting dia check proper apa cause dia first. A few of my mum friends had similar pain at that stage and turned out okay, but some needed attention, so jangan guess-guess. Your doctor will examine and baru tahu apa yang betul, could be ligament stretching, or something else they need to monitor. Take care of yourself, and get checked out soon!