A photo would be great but there are probably a few more important things to worry about in your present condition!
Sounds like a millipede or centipede.
This site has some id photos that might help with your id
Hope this helps:)
Millipedes like the damp - they normally enjoy decaying vegetable matter - so if you have had damp weather, they have probably been breeding happily for a while. Basement dehumidifiers are often used to keep underfloor areas dry and less attractive to visitors like these. If they are coming up through the cracks in your floor, the best and safest solution might be to block up the cracks with some caulk or even as a temporary solution, electrical tape. Check you haven't got a damp spot in your kitchen - is your sink/ tap/dishwasher/washing machine leaking anywhere? Vacuum them up if you can when you see them and put them outside in the bin to stop reproduction. Also keep decaying vegetation away from your house if you can, such as leaves, weeds, etc.
Insecticides are often used but under the circumstances, at the moment you may not want to go down this path. I use sticky traps (which usually have an organic bait) for cockroaches and moths, so maybe something like those would work but I don't know if millipedes will want to walk across them!
This site has some other suggestions but I can't vouch for the safety of the chemicals suggested, so be very vigilant about possible safety concerns even with so called 'natural' solutions.
Probably best to just try and make your house less attractive and seal it off as best you can. They're persistant little creatures but do play a huge
role in the ecosystem, so if you can just point them in the right direction (ie outside) hopefully they'll figure it out for themselves.