Not late yet, but I’m freaking out..

So I had my period Dec.12-15 and then had unprotected sex (w/pull out) on the 22nd, 31st, and Jan. 4 (used a condom). I just started my senior year semester in College so I’m really stressed out but I’ve also been feeling nauseous for the past 2 days (I occasionally get randomly nauseous but usually goes away if I drink tea) and feeling a bit of cramping. I’m supposed to get my period tomorrow Jan 11th but now I’m scared that the symptoms I’m feeling might be early pregnancy symptoms and not necessarily pre-period symptoms. I’m pretty regular maybe a few days late, so I don’t know if I should try taking a pregnancy test tomorrow & if I still don’t get my period then again In a few days? Also not on birth control.. actually in the process of scheduling an appointment for an IUD. Any help is greatly appreciated 😓