IN NEED OF HELP⁉️⁉️⁉️Please respond

Anastaia • |Wifey 💍| #2👶🏽| #1 👼🏽💔| ttc # 3
I am a day late for my period. I took a test the day my period was supposed to start which was Friday, it came back negative. I used the Walmart 88 cent will mark day two of me being late.. I have also been taking antibiotics if that has anything to do with my cycle being late? If not when should I test again?