HELP!!

A couple of months ago, I accidentally took 2 placebo pills instead of active pills. When I realized, I took 3 all in one day (the 2 I missed plus that days pill). 
I take my pills at exactly the same time every day, & my & my boyfriend have never had unprotected sex. I haven't missed a period but yet I feel extremely paranoid. Could missing those 2 pills have messed up my cycle & possibly increased my chance of pregnancy?