I noticed spotting a week before my actual period date....and since the last 2 days..ots more than spotting but also not proper period flow..also suddenly now there is inflammation/swelling in the area that joins the two hips...it hurts when you sit...I have usually had regular periods..since 2-3 months..it would be one week late..but I'd always get my periods..last 4-5 days..max 6 ...flow becomes  quitelight by the ends of these days. I have noticed this inflammation before also , back then it was told it could be due to sitting on hard surfaces. A physical examination was never conducted to actually check. What could be the reason for this inflammation and spotting.