Should I be concerned ?

my period is a week late . The glow app & another app I use both say it was supposed to come last Monday (May 4th). Once you tell the glow app that your period hasn't started it gives you a new date. well today May 11 is the new date and still no sign of it.. I've been experiencing various mood swings and my nipples are very sore .. My SO seems to be really nervous because he thinks he may have had too many drinks could have possibly ejaculated inside of me on Friday  May 1 .  Is it too early to tell anything ? Should I be concerned ?