Congratulations on your expected child
Being pregnant MS can take a hiatus due to the hormones produced during pregnancy. Your doctor should be made aware that you had MS symptoms prior. Post-pregnancy, with the reduction of pregnancy produced hormones, can bring on symptoms (not always).
I burned myself with welding sparks while teaching my son. A drop of metal fell on my ankle. I did not notice until I smelled it. Although it was a bad burn, I was lucky because it was only about 50 mm in diameter. The scar remains as a reminder that while my intentions were good my use of the equipment was dangerous to myself! I can imagine burning yourself in the kitchen. When I am in the kitchen in my power chair, I will keep protection on my lap. The best thing for me is a wooden board on which I can work.