Feeling bummed

Ladies so today I took a test and it came back negative that was the most heartbreaking thing I could’ve seen. It had me all upset crying and what made it worse was my coworker is pregnant and that’s all she could talk about was her baby. We have been trying since August I did get my period in that month tho. I’ve never been on birth control. So now September goes by The app makes me aware that I have not gotten my period which should’ve been on September 22 my periods are normal I don’t know if I should still continue to wait to take the another test mid October my bf told me sometimes it still can be to early to test. Ladies I just need some advice on what to do I’m so lost and feel like I’m doing something wrong. Thanks.