Oh come on, stop being silly! The only way you can know for sure is to go and do a test, so just go and do one rather than trying to guess :)
First signs of pregnancy by: Veronica
On this website is a page with the first signs of pregnancy. If you look at this list and you have some of these signs you might be pregnant. The best way to know for sure is a pregnancy test.
Here is the page: http://www.womens-health-questions.com/pregnancysymptoms.html
Some of the possible signs are, dizziness, nausea, missed period, sore breasts, frequent trips to bathroom, food cravings, morning sickness, back pain, heartburn, constipation, mood swings, being really tired, sensitivity to smells, spotting and bleeding, headaches, etc.
