Not on any birth control, last periods started on days 30, 30 & then 34 but my recent cycle that i am on now started yesterday on day 40! am i normal?

Delayed menses: If the "period" has normal symptoms, length of bleeding, cramps, etc. it may just be a delay of your last ovulation, which happens 14-15 days before the next period. If you are concerned about pregnancy, get a serum HCG test from your gyn provider, which is very accurate. Ovulation can be delayed by additional stress in one's life.