feeling discouraged..😢

AF is 5 days late... took a test, came out negative. Last month I had wisdom tooth surgery and they put me on antibiotics without telling me it could affect my menstrual cycle and it caused me to be almost 2 weeks late. Which of course, caused me to think I was pregnant, just to be let down. I've had so many negative pregnancy tests over the last few months, I don't ever want too take another just to get my heart broken again. I know there's women on here who've had it harder, but this hurts and I just feel really down and needed to vent...