I Lost My Virginity To My Husband Last Saturday And

I Lost my virginity to my husband last Saturday and I have been nauseated, fatigued, and bloated ever since. Not to mention the back pain. It feels like Ive started my period or I could possibly be pregnant. He uses a condom every time and I've had an IUD placed this past July because I don't want kids for at least the next five years or name be never. Who knows. But I'd just like to know if I could still be pregnant because the symptoms are all there.