WHERE ARE MY PMS SYMPTOMS?

My period is due in 4 days & I have yet to have any PMS symptoms! I usually PMS for about 2 weeks before my period but lately I haven't been getting them until about 5-4 days before, but my period will be here any day now and I'm not PMS'ing yet. This has never happened. I did have unprotected sex this month. Idk if I was around the time that I ovulated because I'm not sure when I ovulated this month. Could I be pregnant? I know I obviously would have to wait until I miss my period but from the looks of it what do you all think?