I am 37 weeks pregnant and from about 29 weeks I had a bit of an idea of where she was as I could always feel stronger movements in one spot which I assumed would be her legs/feet. I asked my midwife at one of my appointments, she had a feel around and told me exactly where her head, back, bum, legs were. Since then she hasn't really moved from this position. In a few weeks you may have more of an idea, its amazing how much bigger and stronger they get within such a short time. But I recon ask your doctor or midwife at the hospital to have a feel around for you.