I've been having spotting on and off for a week and a half now (I'm 18 weeks, 3 days). Midwives sent me for an ultrasound last week and the baby was fine -- good heart beat and kicking away. Cervix was fine. The doc said an edge of my placenta looked a tad low, but that it wasn't anything to worry about at this stage and that it could move (?). Overall, they chalked up the spotting to "just one of those unexplained things". But I'm still spotting...not every day, but every other day or so. Midwives said yesterday they might send me back for another U/S tomorrow (Monday). It's all such a worry. I'm afraid to move. On the positive side, I am feeling the baby move. So that helps.

Anyone else experience second trimester spotting and have an explanation for it or not?