Could I possibly be pregnant? 😅

Hey guys,.. I'm having a bit of an issue, last week, the 24-26, I stayed with my boyfriend of four years, (We live in separate states right now). We had sex, I took my pill on the 24th, but forgot to take my pill on the 25-26th, to now, because I lost the pack, and needed to call my doctor to get refills, anyway, we had unprotected sex, and he did finish in me. What are the chances I'm actually pregnant?
Also, I feel like I have "symptoms" but I don't know if I'm just nervous, and thinking everything over too much? The current symptoms I'm having are, Nausea, mild cramping, diarrhea, and I'm extremely tired. I know it's too early to take a test, but.. Any ideas?  I appreciate it!