i think the first two links are to the same pic? but yes, i would probably call that one pos. the cd14 morning one, probably not. now they do say to test lh in the afternoon-early evening, but i find once i have a pos, i can still test the next morning and it will be pos then if it is really still pos (as in, it's not pos one evening, neg in morning, pos in afternoon- once it's pos, for me, it stays pos until it fades, if that makes sense.) so if you had your first pos opk at 7 pm on cd13, the best guess of o time would be morning of cd15. (it is most often 36 hours after your first pos opk, but can be 12-48. your opks will likely be negative when you o.) you should dtd from the first pos until the day after o, so in this case, cd13,14,15, 16, for example. couple caveats- it's only necessary to dtd once during your fertile window, but the more you can, the better your chances (up to a point- more than once a day isnt likely to improve your chances.) the other thing is, watch your temp, and i would keep doing opks until you see a sustained thermal shift (temp up for probably 3 days, or until you are as certain that you can be that you did actually o) because a pos opk does not guarantee that you will in fact o, only that there is an lh surge, so you are likely to. cp and cm can also help you to figure out what is going on. good luck.
