OOkay I Had Unprotected Sex On The 23 Of November

OOkay I had unprotected sex on the 23 of November and ovulated on the 26 of November. Now I have been cramping in the lower stomach ( pelvic area) and fatique also been have light pink bleeding also been having mood swings and urinating a lot especially at night and having gas my period is due December 10 could this be preganacy? My period is normal every 28 days