what could this be from ?!

Yesterday I woke up with this , and it was small .. itches like crazy and has a slight burning sensation. Where I live it’s winter so there’s no mosquitoes biting right now . I woke up this morning and it’s HUGE , I have another bite mark on the same arm smaller and on my right arm as well

This was yesterday night

This is this morning

I have applied witch hazel too it and took something to see if it will go down ..

What could it be from ?!

Other two that appeared on my arm as well