So as a vegetarian of about 4 years, my cycle is a bit longer (about 31-35 days) and sometimes irregular- I have been about a week late a couple times before.
My last period came March 27th and it is now officially May 5th. Being a bit late wouldn't make me worried but I guess the fact that there was no "monthly flow" for April makes be feel a bit on edge.
My boyfriend and I have been dating for over a year and I am still a virgin. We do get intimate though but I believe we've been responsible (but I do know things happen).
Furthermore, the week before I was expecting my period, I had college finals everyday, 8am for a week. This brought a lot of stress, anxiety and sleeplessness. I've also been taking multivitamins and 1000mcg of Biotin every day during that month of April. On top of that I just turned 20. And this week has been nothing but worrying and Googling, haha.

It's never happened to me yet but could it be possible that I just missed my period this month?
Any thoughts/advice? When should I start really worrying and take a pregnancy test? I'm not on any birth control and I personally don't want to be on it but I think if I do get my period I'm definitely starting!