My period is due tomorrow please answer..?

Should I test first thing tomorrow? Or should I wait till the day after tomorrow, which would be a missed period? I'm TTC. I really hope I'm pregnant. I took a test today and it said negative but is there still hopefully a chance that I'm pregnant? ( I used First Response Early Result). My cylces are 33 days long, my last period was october 3rd, and my next period should be tomorrow. I saw EWCM on 20-23rd (october) and I BD on the 19th of october. Is there a good chance I'm pregnant? When did you get a BFP? Do you think I have enough hCG level yet? I've read some storied about women not getting a BFP until a week or maybe even two after their missed period.