Advice on preg symptoms

So for the past 2-3 days I have had flu like symptoms and it has not gone into a full on flu or cold just sneezing and runny nose nothing has come of it usually when I get a cold it hits me hard. I am currently 7dpo and I am also starting to feel nauseous after drinking or eating certain things mostly after I have had tea and I have never had a problem with tea. Please if anyone has had this before there BFP let me know, or of you think it's just a cold.