Memory loss? Vertigo ? Help

Ruby

So I am freaking out. These past 2 weeks have been odd for me. I have been forgetting things quickly and feel as if I am outside of my body, I also feel shaky and get vertigo when I'm sitting down. I am still breast feeding , I didn't start my period this month. So about the memory loss today was bad. I went out to shop with my 5 year old and 9 month old kiddos, when I got back to the car I was putting my infant in his brothers car seat!!! I didn't realize it until he was buckled in and I freaked out. I don't know what is wrong with me. I feel lightheaded as well. My appointment for this is on Friday. Have any other moms felt this way?