Trying to understand:

My AF is now 10 days late, took a test yesterday & it was negative but I feel & look pregnant ( I've had 2 full term pregnancies & 1 at 37 weeks ) my last child I got pregnant with her at the age of 40 but didn't have any issues during the pregnancy nor during the delivery & everything went back to normal about 3 months after she was born that includes my menstrual cycle. The beginning of April was my period & in the last of April ( the 20, 21, 22, & 23 ) everything new began.. not sure if it was ovulation bleeding/implantation bleeding/ mid cycle bleeding or something else. This is my first time tracking all this and I still don't understand what it all means. I can't sleep on my back anymore because it hurts my stomach & makes my right leg cramp, my stomach is round & hard, I have morning sickness ( not vomiting though just feel nauseous ), I have indigestion & gas, a metallic taste especially when drinking, increased appetite. My CM has been raw egg- clear white thick stretchy- wet slippery - then back to raw egg CM. My boobs are thicker/fuller but not sore & the areola are not darker, the line on the belly is getting dark again especially below my belly button. As for mood swings: they are normal typical mood swings. I'm not having any symptoms of pre Menopause though not any of them and I've been tested for PCOS and it was negative.