I️m a little worried.. SOS

Geneva

I️ had my period during thanksgiving and my boyfriend and I️ had sex two Saturdays ago (12/2) and he came inside me but I️ went to the bathroom immediately after. Now I’ve been spotting for the last week and I’ve had minor cramps... I’ve even had to use a couple of tampons. I️m not supposed to get my period until Christmas so I️m kind of confused. I’ve had the Paragard IUD since March. Sometimes my periods are irregular and I get cramping without spotting. I️ can’t help but freak myself out that I may be pregnant. Any feedback is much appreciated!