of the bite, not later. mosquito bites you can feel, but they do not usually become painful for a long while after the bite has occurred because they need time to grow.
if you’re still not sure, it’s important to keep in mind that spiders are not the vicious attackers that people think they are. they are very timid, and in nearly every case they only bite if they are in the process of being attacked – for example, if you’re placing your hand directly on top of it.
this means that if the bite simply seems to appear while you’re out, and you cannot seem to find signs of spider fangs 