Early Pregnancy Symptoms or Post Holiday Symptoms?

Ladies we are getting closer and closer to the day that we may test and it’s so exciting but I just thought wow today my symptoms have been the worst so far (cramping, fatigue, just a general feeling off) and I’m wondering is there bc I truly could be pregnant or is this due to holiday stress and overeating ( I really don’t feel like I ate that much but definitely had a lack of sleep with all the travel that we did so just wondering if anyone else is starting to ask the same question) I’m an overthinker!