SMEP.... getting sick of BD and only a week in...

I'm exhausted with this every other day planned intercourse and no positive opks yet... I'm almost dreading it, because then we'll have to do it 3 days in a row. I love my hubs, but this is so tiring. Am I a terrible person? I want a baby, but this is ridiculous. 10 years ago, I didn't even try and had 2 in 2 years... Getting older is frustrating. Why is it so much harder?