My fiancé and I had sex every other day/ everyday from feb 25- march 9th. I was fertile march 1-6. Yesterday I started having severe headaches, dizziness, and super sore breasts... I've felt extremely tired for like 5 days now. Also have been having a stuffy nose. I'm not supposed to take pregnancy test until march 20 but have been thinking about taking one on the 17th if these symptoms continue. Am I going crazy or should I wait to see if period comes? Please let me hear your input