Late period TTC

Sara× • 18yo soon to be engaged and getting our first home with my 20yo💖Just bought our first car together and TTC!🙈🙏❤

Last time I started my period was December 30th and lasted 5 days, how late am I? I've been getting cramps tho and I'm hoping it doesn't start! But also my fear of all this nausea and vomiting makes me want to back out of pregnancy....Any advice? *sigh*