OP, you are getting a bit of a hard time from people who are not worried and who are not making preparations. None of that helps you and the reason that led you to put a post on here.
I do have a few suggestions and they do not include stocking up on toilet roll.
First, write down what you’re frightened about, what you are worried will happen and why it is that those particular fears are getting to you at the moment. Just take 15 minutes to write that all out.
Second, find someone you can talk to about your fears. I have a friend in a similar situation and she talks to a close neighbour, a man who is older than her and he calms her down. You need to talk to someone. As I read things, you are on your own, worried about your other half and worried about how you will cope. That’s completely understandable.
There are other things you can do. You can look at Preppers websites, in fact I think there’s a Preppers thread on MN. I don’t suggest you go down the lines that they go of getting generators, bags that can store food for up to 10 years without it deteriorating, ground sheets and goodness news what else including digging shelters in the garden. However, you can do little things and those threads might give you some ideas.
One of these might be making sure that you have a set of rechargeable batteries, that they are charged up and that you have a charger to charge them up again. Make sure you have a good torch that they fit into and that you know where to find it.
You could get some tins of food in. You could get a water purifier such as a Water To Go bottle.
Write down what you’re worried about and write down what you can do about these things. Also, I suggest that you have a think about where your fears are coming from.
Best wishes. You are not alone and please do not take to heart the supercilious and jokey comments that are on here. I understand that you are worried and anxious and many people will be feeling the same.
Finally, as an afterthought,I suggest that you do not listen to the news or read newspapers. This is an approach taken by many people and it takes you out of the sphere of unnecessary worrying.