My period has stopped!❗️🚱

I can’t find this normal! My period has never stopped.! Ever since, I have been taking baths. My period decides to not come on..! My period comes on every month and this very scary to me and odd.! Is it because of bath water.? I get cramps from now and then but no period.! Acne is occurring to me right now. Is this a sign that my period will come on?. This might sound dumb but when my symptoms show. My period comes on automatically or 1 day after because, today my period should have came on but it didn’t, and one week ago it should of came on.! Is it normal for a period to skip a month.? I’m 15 years old as well, and I’m very worried. Can this happen sometimes at this age.?