Hey My Name Is Savanna. So I Habe Always Had

Hey my name is Savanna. So I habe always had a very regular period, never been late or early on a 26 day cycle. I got my period on September 6-11th. I was sexually active with a condom on September 19th & 20th. Then we used the pull out method on the 22nd, 23rd 24th & 25th. I started my period again on the 27th and it was only 4 days long and that's a few days early. Well I had sex every day from the 26th of September to October 7th without a condom or pulling out. We used no protection at all. I am now 6 days past my period. If I have calculated correctly I think I ovulated on the 8th. I did not have sex on the 8th though. The 7th is the last time I've had sex. I took a test 4 days ago and it was a negative. Could I still be pregnant and are my dates right?