I guess the real question is, how much more loo roll than usual is in your house? Because you'd all probably be appalled at how much we normally have in stock, but it's one of those items you can never have too much of and definitely don't want to run out of. So we usually have a pack of 9 Aldi rolls upstairs, and one pack downstairs, as a minimum, but we currently have more because we each bought a pack independently of one another last week. We definitely fall in the 'prepper' category, though maybe not to the same extent as some others (no judgement, just observation! We're in the category of 'has water purification tablets' but not quite yet into 'has a fancy filtration device')
I buy tampons in much the same way; if I'm out and unsure of how many I have at home, but I know I'll need them soon, I buy another pack. I currently have 6 boxes of tampons. 
FWIW, none of this is out of our normal shopping patterns. I also already had 2 spare bottles of hand soap at home, so didn't need to buy anymore. Dettol, wipes, and tissues also exist in abundance in our house (DH and DS are allergic to everything so tissue boxes are bought in bulk), but none of those things were purchased since CV.
Going by my past experience with panic buying (for blizzards, in my home country), I'd say people have just about hit peak buying, and if you're able to wait until tomorrow or the next day to get to a shop, you should have plenty of the essentials restocked (and not many people there fighting for them anymore, because they've already got a garage full)