Pre Pregnancy Symptoms

Hi Mummies, i am trying to conceive but still unable to use the pregnancy test kit yet as i am 1 week away from my upcoming period, doubt the result will be accurate. However, last night i experience white discharge and some mild cramps at the lower tummy. This morning I felt a little nauseated and didnt have much appetite when it comes to meat. Could only have some carbs. Was feeling slight headache too and took panadols. Just out of curiosity has any mummies experience such symptoms prior to a positive pregnancy test/upcoming period and got pregnant in the end? Just didnt want to take too much medication if i am really pregnant. Thanks!