Cycle fluctuating for last 3 months

ldavis112712
Last December I had a miscarriage. For months it was fine some reason the last 3 months it has fluctuated. The first two months it came maybe 2 weeks late. The month of December it has not come at all yet. It's currently 2 weeks late and no sign of it. My discharge has been thicker than normal. I've had light breast throbbing. I'm just concerned now. I normally don't post on here but I need some healthy advice.