I had an embryo transfer yesterday - our only embryo remaining, and I've had terrible stomach cramps and constipation. This evening I went to the bathroom and although I passed some small stools (and also what looks like the cyclogest I've been using) by straining I had brown blood and a small string like thread of blood attached. Is it possible I may have lost my little one after coming this far? I'm going to try a small amount of lactulose this evening but I'm worried I may have lost my little one already? Please can someone advise. I really should have asked before I left the clinic.