a glass of wine once in awhile is perfectly okay while TTC, don't listen to fertility friend.
Obviously, don't overdo it, but trust me when I say I did far worse before I found out I was pregnant with my DD, she is my only unplanned child and I found out when I was about 5 weeks. She is perfect, though I spent nine months worrying about whether I messed her up because of my own stupidity. But I didn't know I was pg when I was doing those things and as soon as I found out I was pg, I cut all my bad habits out.
I'm not endorsing drinking or doing drugs while TTC or being pregnant, just so we're clear.