Has anyone else had problems with OPK tests? I got a positive on them last month but this month still nothing at cd15. I'm testing 3 times a day now so I couldn't have missed it and I've had EWCM but cm seems to have dried up now.. I had a temp drop this morning so should I keep testing or just wait and see what my temps do in the next 3 days? My and OH are gong to continue BDing until I have a sustained rise anyway... Any advice would be really appreciated!