??? Sooooo confused!!

Melissa
So we're ttc and my period can come anywhere between 26-32 days apart. Earliest was 18 days apart and latest ever was 40 days. Husband and I constantly have sex sometimes everyday and other times every other or every couple days. We have been ttc for about 6-7 months now. Average period day is about 31 days apart.........now I'm on day 37 and still no period and neg tests even today (day 37)................my periods usually only last 3-4 days..........idk when I ovulated.........(trying to conceive in a relaxed way, no stress) but idk what I'd going on.........so many variables........think I'm preg???? Anyone else in this situation with same type of body?? I'm stressing bad and it's driving me crazy not knowing, I'm so impatient and frustrated!!!