ttc having nausea from cd 10

Daisal
TTC have got bad nausea and headache from CD10 and its CD12 today but its there all the time. Did anyone experience similar symptoms while ttc? Could I be pregnant or its due to some other reason? So much nausea for more than 3 days has never happened to me before. Its too early to get pregnant but I am confused what is happening to my body.