is it possible 4 pregnancy 2 occur this way?

me and my gulfrend were having a foreplay n were both nude
i dd nt touch my penis 2 hr bt posibly i dd touch it 2 hr shorts and ejaculated some precum on it, maybe a drop nt more
sudenly someone came 2 her house and v got dresd and she wore hr shorts without hr panties on
n later she realised wat had hapnd n got scared
she had 2 hav hr periods on the 26th bt she hasnt had them even 2day ie 28th
can she get pregnant this way??
i am very scared and if she cant b pregnant den wat is d reasn 4 d delay in her periods??
she hs severe stomach ache during hr periods bt she is nt evn having any nw
wat cn b d reasn 4 this?? i am 15 and she is 14
this happened on the last day of her period in the previous mnth and im very scared bcz she is not had hr periods yet this month
i donot remember the date exactly of this incident
please please help me i am very scared n she is as well
please coment and help me
i am in dire need of help