Gonna start trying for number 3 . But......

Erika
So me and hubby decided to try for number 3 but my question is ............ i did not have a period in the month of april all i had was brown discharge spotting for 2 days then on the third day i had pinkish spotting one time in the morning but i had just stopped this pill mid march could that be the reason my period was off track ? I have taken tests and they were negative .