I'm six weeks pregnant and I've been experiencing sharp pains in my lower abdomen and back. It started last night and kept me up but eventually got better. But today it's been the same for the past 2-3 hours. My pelvic/hip/upper thigh area has been sore as well, but I haven't experienced any spotting or bleeding. I've had a miscarriage before and the pain feels very similar but again no bleeding, and I never felt pain like this in my first trimester with my son.