Latest is "don't". Next month it will probably be "fill yer boots"....
I work with doctors and one gynae prof told me that one or two units a weeks is fine. It will relax you and baby he said.
Becks do a v good alcohol free lager. When I was pg I also had a small measure of wine topped right up with soda and ice. Tasted nice - downside I was peeing all the time
ALSO - docs I know said that the safe units for women was a guesstimate that they came up with "because woen are a bit smaller than men"