Getting period between periods

My last period days were September 10-14. Okay, I don't have regular periods, but to me, irregular periods mean long distances between periods. Because this is what I have been experienced. But now, since October 1st, I have another one. This is the first time I have this kind of too soon period. It may be an early sign of pregnancy? It is still too early to get hpt. Any thought, or experience?