Help Advice Needed

So my boyfriend and I have been having A LOT of sex lately and my period is supposed to be here tomorrow but I haven't been feeling the usual symptoms other than slight cramping yesterday after drinking a Pepsi. We normally use the pull out method and sometimes a condom but condoms hurt and dry me out. Could the sudden change in sexual activity change my period? And keep in mind I've been under a lot of stress latley with my graduation and my step dad getting diagnosed with stage 4 prostate cancer with it attacking his spine as well.