Why pregnant now??

I realize no one may be able to tell me exactly why but.... I have been sexually active since I was 16, some protected, others not. Never had a positive test and periods are VERY regular. Married to my husband 6 years (he has two kids from previous relationships) and never had a positive until 2 weeks ago! And we "practice" EVERY night. Not because we force it, that's just how we've always done it. I miscarried last week at 6 weeks along. I was devastated. So now, that I want to try for a healthy baby, it has me wondering, what took so long? Will this jump start things down there? I've been taking prenatals, I stopped smoking when I found out about my first baby, I DONT drink, I try to stay stress free, I eat right, drink.lots of water, and using preseed. I would love to TTC ASAP. The miscarriage was natural. What do u all think?