Could Brown Mucus Vaginal Discharge Along With Abdomen Cramps Be PMS?

Hiii doc ....I wanted to ask that I have a thick mucus form light and blackish dark brown discharge as soon as I stopped the inserting capsules on the expected date of my periods....so is it possible that I may be pregnant or shall get the periods..and also getting some periodic cramps in my ba
ck.....thankyou RR .