Menstrual Cycle Question?!

I'm 20 and a virgin. I got back on the pill in February due to my irregular menstrual cycle. I have been with this guy and we've fooled around but there has never been penetration. About a week ago we fooled around but it was only manual stimulation. I don't believe he touched himself and touched me (I'm pretty sure if he touched himself he used one hand and used the other hand to touch me).....as I am very cautious and paranoid about that. I was due for my period yesterday and haven't gotten it yet. I feel bloated and gross.....like I usually do on my period but it's not "here". I'm concerned.....I know it would be rare for me to be pregnant as there has never been penetration AND I'm on the pill but I don't understand how my period isn't here yet. I had it for the month of February.....so where is it now? I'd like it to come and go as I have plans this weekend and don't want to have it.