I'm 44 Years Old (45 Next Month) And Am Fairly

I'm 44 years old (45 next month) and am fairly certain I'm pregnant. I have 6 children (my youngest is 2) and have had normal, healthy pregnancies every time. I'm just very nervous because of my age and risks involved being pregnant at my age. Conception would have been 7 days ago and I have had 2 negative pregnancy tests, but I know I should not check until around June 8th to eliminate the false negative result. I have many pregnancy symptoms right now, but the waiting game is giving me a tremendous amount of stress