I want to know what you think...?

it sounds very much like you could be, and many women dont get signs of pregnancy till there about 4weeks 3 the earliest so it is very possible that your pregnant from when you guys were just winging it! also not everyone gets the same symptoms so you may not get sore . if you dont want to wait till you miss AF i would go to the doctor n talk to them they may be able to do a blood test and tell you soon then waiting for the 18th to come and go..... good luck and baby dust!!