Irregular periods... 1 week late... still no sign AF near

So i am 41 days from the start of my last period... if my periods were regular. First month taking follic acid everyday. I have had a couple miscarriages over the years and even found that i sometimes dont ovulate every month. For the last 2 months i have been having weird cramps/misscarryiage contraction type pain... did all the tests available and nothing is wrong with me..... so my period is late... nipples feel weird but boobs dont hurt. Pain has reduced dramatically in my stomach but im getting like heartburn during the day and slight insomnia at night. All BFN tests but really creamy wet CM fluids... anyone had the same?. Any advice?.