Hi, I'm trying to get pregnant (my second) and had sex around my estimated ovulating dates. A week before my period was due (d21, I usually have 28 days cycles or longer) I started with light spotting (brownish/pink) and veeeeery painful breast (specially my right one). Having had one child already I thought it may be implantation bleeding (though I didn't notice the first time) but on the 6th day (ie day 26) I had heavy bleeding (that is today!) like my period. What could it be? I've reading all sorts from cysts to maybe the egg didn't attach properly. Can someone help? Called doctor and next appointment is next week! Many thanks