Am I pregnant?

On August 16th I started my period between July & August it was a 30 day window I ovulated on the 31st of August we also tried on the 31st of august I ended up getting my period September 14th I did not try in September I ended up in the ER Oct 7th for abdomen pain and he did a CT scan at the ER & also blood work never told me I was pregnant but saw a “cyst” on my right ovary I’ve googled (i shouldn’t have) but early pregnancy could be mistaken as a cyst or even TWINS if I’m pregnant I’d be 8 weeks. But here it is Oct 17th my period is now 3 days late is it possible to be pregnant? I already have a appointment scheduled this month with my OB for the “cyst” but just curious since I’m late! I haven’t tested!!