Various contraceptive methods

I just started using Ocella. Prior to this my periods were normal and on time. I'm still on my first month & am worried why my period has not come yet. I'm on day number 3 of no pill. There has been a small amount of brown discharge, but nothing i would consider to be a period. I didn't know if this is normal or if i'm just over worrying. My boyfriend and I were intimate a few weeks ago and the condom slipped off & i'm just worried. At the time i was on the pill the condom had spermicide and i used the morning after pill. Does this sound about right to you for just starting out on Ocella? I used nuvaring for about a year prior to this. But it has also been a year since i've been on any type of birthcontrol so... any advice would help. Thank you!