Had protected sex 2 weeks ago with my bf. period suppose to come 24/25th and still not here. past 2 months came on time/few days early...is it late?

Perhaps: An irregular period is not abnormal. You can take a pregnancy test if you are worried about a pregnancy. If negative be patient

It is: Likely late. Protection barriers when used properly are very effective. Since your periods are irregular it may be just that. However you could do a home pregnancy test in week if your period is still not on