Anyone know what kind of insect could be biting me at night?

My husband started waking up with itchy red bites on his hands sporadically over a couple months last summer. They are not bed bug bites, I am certain of this. Since we sleep in the same bed and I wasn’t getting any bites I assumed it must be allergy related or something else… until last night when I suddenly woke up with an extremely itchy arm. This morning, it is swollen like a spider bite and my husband has two bites on his hands just like the ones from last summer/fall (not close to together like bed bug bites).

We have vacuumed, put up sticky traps, washed all our bedding multiple times, and checked the mattress corners closely when the bites started last summer and we never saw any sign of an insect, but based on the appearance of the bites I am pretty sure it’s spider.

Has anyone experienced anything like this before? I feel kind of bad for accidentally gaslighting my husband last year, but now that I’ve been bit I’m certain it’s not allergy related. Does it make sense that a mysterious spider has been dropping down and feasting on us while we sleep?

EDIT: added a link to two images link to photos

UPDATE: We pulled out our bed and did a thorough investigation and found a couple carpet beetle larvae. Zero signs of a bed bugs so far, so I’m thinking it’s likely the carpet beetle is the culprit. Luckily we are already in the middle of a major deep clean/renovation of our home so we will be clearing everything out and sanitizing everything.