this is my 4th month of taking birth control. I take it around the same time 5-10 mins late sometimes. earlier this month my boyfriend and I were grinding naked and I'm worried some pre cum got on my vagina. I'm in a huge panic. later this month I took plan b for another similar situation that happened. I was due to get my period today and haven't. I'm not sure if I should be worried or if it's just the plan b or all the stress because I was also recently diagnosed with mono and I've also been stressed over pregnancy. my boyfriend and I agreed after this month to abstain from sex because it causes me too much stress and the stress feels like it's taking over my life. please help.