Pregnancy maybe ?

Ok ladies my last period was the 6th of last month been having normal periods . Husband and I had sex all through out my ovulation period multiple times . Here it is about to be the 6th of July and I'm having this thin clear faint white discharge . Usually I get brown before my period from old blood (confusing) . I did take a pregnancy test and was strongly negative but I don't usually get this discharge . Ladies help I'm wracking my brain . Been trying for almost 3 years .