Confused

Took a first response 9dpo and it was negative, regular test 10dpo negative too. Had light cramping like 3-5dpo and now since 9dpo (i'm 11dpo today). Boobs were sore too 10dpo. For three days i've had some weird gas pain too.. Period is due saturday, but i've never had cramping that early and it's completely different from period cramping. Is there still a chance this month?