Im stressing out help plz

Hi ladies i had sexual intercourse with a donor on the 21st august,then i had normal period on the 9th september,then again on the 5th october normal period,im now 6 days late for period but i havent had intercourse,i did have 2 days of spotting 2 weeks ago but no period,wot could be wrong,i have got alot of creamy/milky white CM i am scared somthing is wrong i have also been getting a lot of cramping,my periods r always on time...PLEASE HELP ME note i did have all my hormones tested on day 3 a month ago n they were all perfect