Hello~Many folks, including myself, will have brief periods where we will forget what we normally do all the time, it is actually normal, plus, if you are under stress, this can make the matter worse as your body is releasing cortisol and cortisol can play havoc with your memory. Also, if you have a lot on your mind, it will sometimes only choose to remember things that are important and just push every day memories to the back. Again, normal.
I have health anxiety at times as well, and I know when I am really obsessing over health, then my memory takes a vacation and then I worry more, so, it is a vicious circle. Let me ask, do you by any chance have Fibromyalgia, if so, that, too, can cause the brief memory lapses, it is called fibro fog, I have that as well.
I would try not to worry about MS, I know it is difficult not to, especially when "Dr Google" gives you a list of symptoms that you may have, again, I speak from experience and try not to look up too much or it starts a chain reaction of worry, fear, etc. Ask your GP if it is possible to see a neuro sooner as you are very concerned or try to make an appointment yourself, again, for the peace of mind.
I hope you feel better soon.