Pregnant?

So I had the copper IUD. I had it removed because my period was very late and I feared I was pregnant. I’ve had the IUD for two months and I’ve never had an abnormal period let alone skipping one. With IUD removes it’s a week past when I had sex last and still no period. I’ve had a lot of headaches and I’ve been congested. I’ve noticed blood in my snot but my snot is clear. But I have NOT been cramping and have had NO bleeding; not even light spotting. It’s too soon so pregnancy tests are negative right now. But could I still be pregnant??