H We will get there. This is cycle 3 for me but cycle 4 off the pill. I've looked at my app and I can conclude the following:
I was shit at knowing when I ovulate 
To be fair, I knew on month 1 (didn't try this month) so didn't try around that time. January we DTD a day either side of ovulation and just didn't get lucky with that. February I completely screwed up with when I ovulated and we dtd too early and stopped too early.
This month we've DTD on CD10, CD12, CD15, CD17, CD18 and I'll probably make sure we DTD again today just incase
I've got cramps today, almost exactly like AF cramps. Will do another OPK tonight.
I've worked out if I get pregnant this month, my due date will be my birthday 
If I'm not pregnant this month then next month I'll up my game. Will stop drinking completely, eat even better, exercise more, make DH take conception vits for men and anything else I can think of.
I have to say, DH has been great. It's taken years for him to get to the point of wanting a baby but now he's been showing quite an interest, even examining OPKs with me, although looked less than impressed when I shoved yesterdays in his face whilst shouting "OMG, THE LINE LOOKED LIKE THAT WITHIN 5 SECONDS!!" 
however if he thinks he's drinking next month, he can think again