If you think you could be PG, POAS. If you think it's too early to test + but you have symptoms of PG, most of those symptoms can and usually are explained by something else entirely. (like AF, illness, stress, etc).
Please don't ask us if you are PG because we can't tell you nearly as much as an HPT can.
If you insist on asking us if your PG anyhow, please use the word Pregnant, or the abbreviation PG, but please don't use Preggo, Preggers or some other kindergarten form of the word. (I normally dont care if people use this, but if you're already going to annoy the shiznit out of me by asking if youre PG, best to use the actual word).
If you are past 18 days ovulation (and you know this by charting) and still havent been able to get a BFP or AF either reevaluate your chart or go see your DR. If you just "think" you are 18 days past ovulation because 18 days ago was CD 14 for you and that's when "everyone is supposed to ovulate" please read Taking Charge of your Fertility, go buy a BBT and start using Fertility friend.
GL to you in your quest of finding out if you are in fact KTFU.