The past few days my discharge has changed to be clear and string like is this my mucus plug I'm a ftm and thought that the plug is meant to contain blood? Also I've had a lot more tightenings which start to release then get tighter, after them I get lower backache a dull ache and some period cramps. All of this is bareable and not overly painful. Is this a sign that baby is on his way? I just hate not knowing what to expect.