I need help/comfort

So I've been trying to conceive for the past 6 months. I was supposed to get my period on the 3rd friday and still nothing. I'm a regular. I've been testing with the pregnancy strip tests every day for the past week and still negative. I'm taking the prenatal vitamins for a month now and try to get busy with my hubby every other day during ovulation. Did anyone get a positive result super late after their period was supposed to come? What else did you do to improve your chances of getting pregnant? Thank you in advance.