Am i pregnant or just ovulating late?

Hey lovelies, I had a question if any one of you could help me with.

So I'm in a long distance relationship with my boyfriend and he was over last month, we had crazy time together cooking for eachother, roaming around , like any Normal couple would. But we got carried away with the moment and didn't care about using condoms and I ended up using ECPs for 3 days straight and after that we had it again just an hour before he left and I felt lazy and didn't take anything afterwards

Now, I'm late and I did have 4 days of spotting after he left. I've been feeling nauseous after I wake up, also after everytime I have any meal.

Now I'm worried if the ECPs failed or if I'm experiencing side effects