Is There Any Way To Speed Up Periods?

Hi so I had sex with my boyfriend about a week ago but the condom broke. I took the morning after pill right away and followed all the instructions and everything.. so it should work, right? However my period is very irregular anyways and I was going to be put on birth control for it anyways, but little too late... so when should I be expecting my period and is there any way to speed up the process so I know? Im really super nervous :( and I can't be pregnant.. at any cost I CANNOT BE PREGO!!!