I am really confused as to how conception works. I read everything online but just wondered if you ladies can share some experiences with me. My husband and I had sex July 13th and on July 19th I started to experience lightheadedness, dizziness, headache, hunger and sore breasts. Every since then up until 2 days ago... Symptoms include: lightheadedness dizziness cramping nausea gagging while I brush my teeth back pain rib pain lots gas belching and eating a lot... is it possible I could be pregnant and feel all of this already?!? The last two days has been milder but lots of back pain. Any help is welcomed! I'm due for my period in 2 days... Thank you! :)