Help!

Just found out I am 5 weeks pregnant! Totally unexpected and I’m freaking out! In the past 5 months I have had X-rays done at the dentist for my yearly exam and may have taken a sip of beer and a margarita? (Can’t remember ifthe drinks have been in the time span of 5 weeks due to I am not really a drinker) Should I be worried? Cause I’m terrified.