What Causes Nausea And Excessive White Discharge While On Fertibella?

Hello. My husband and I have been trying to concieve for almost 2 years without success. I have regluar periods but can sometimes be a day or 2 late. Never more than 3 days late. I started taking Fertibella, through conceive easy, 5 days before my period was supposed to start. I stopped taking it after 7 days though when my period never showed up. I am now 14 days late and have had 3 negative tests. They were the ones that came with the kit. I am having some pregnancy symptoms but the only that I have right now that I don t sometimes have before my period is really bad nausea all day long. Espically when I try to eat. I am having a very high increase in clearish white discharge but I don t know if that is a pregnancy symptom or not. I just don t know if I should wait longer and buy a different test, go see my doctor, or if the Fertibella could have caused this.