pregnancy signs??

I'm trying not to read into things but it's hard!! My husband and I had sex on day 2 of my fertile window which was a week ago. Since then I've been incredibly tired (slept over 12 hours one night which is not like me), lightheaded, and freezing all the time (also not like me as I usually feel warm or hot). I know it's too early to test but wondering what you ladies think! (Also been super horny which isn't normal since I had my now two year old)