If my husband is 38 Years old and I am 18 years old,Am I legally allowed to drink with my husband at the bar even though the legal age is 21?

Nope. The law doesn't say 21 except if you're married to someone older.

No, does not matter married or not, at 18 you can not drink.

Same poster, same question, same answer

https://www.askmehelpdesk.com/marriage/extreme-age-difference-drinking-90696.html