Help! What should I do?

I am currently 5 dpo TTC for the first time with my husband and my birthday is March 1st 🎂 (next Friday). I am praying for a positive result for my birthday! Anyways - We are all going out for dinner. I plan on taking my first test either that day or day before. (I will be around 14 dpo then) If it comes back negative, I’m torn on what to do if I should drink alcohol that night to celebrate my bday or not? I used to drink every weekend before we decided to ttc, now I quit unless it’s for a special occasion. What if I could still be pregnant and it be early to test even though it may say negative? I’m torn. Opinions please!