Switched BC

Hi, At the beginning of the month I switched from a generic pill called “Vienva” to a different generic pill called “Chanteal” which is a higher dose. The doctor gave me a higher dose because I wasn’t reacting well to the first pill. Well I’m down to my last 3 placebo pills and still haven’t gotten my period. Is it possible that I may not get a period this cycle due to the switch? And would it be normal for me to have missed a period? Some feedback would help lol as for I’m freaking out right now finding every possible reason for me to pregnant even though I take my pills super faithfully.