I want you doing every other day when the fertile window is not open (so the first option is better to me than the second).
While it is possible to develop secondary infertility, I really do think this is a Shettles thing and we will be hearing good news from you very soon. If we go another 2-3 months with BFN even with more intercourse then we may want to see a doc at that time to see what's going on.