Was it a chemical?

Before I began my period I was two days late and I felt strange. Thats all I can say is strange. My breasts hurt a but especially my nipples. And I was tired and couldn't sleep well. Not normal things for me. Im never late so I was trying to wait it out until I was late for 3 days. But I started bleeding at two days late. I had strange cramps, they were very uncomfortable. I on the 4the day which is the day I should be bleeding lightly with no cramps, I was still bleeding like a normal period with clots. I was confused because my period is always 4 days. On the 4the night I had terrible cramps I couldn't sleep until 4 am. My vagina even hurt. Still having sharp pains on my left. I have now been bleeding for 6 days. It turned brown two days ago but there are still clots. Its like a light period now. The clots are normal btw. But my breasts still hurt a little and another thing was no appetite. Didnt have one before I started bleeding and I still feel like not eating. Do you think this was a chemical pregnancy? Or early miscarriage? I never tested so I dont know for sure I'm.just so confused this is not normal for me at all.... 😟