Why are my pupils more dialated recently (last 3 months)?

I am female, 21, approx. 220lbs, 169cm, non-smoker, semi-regular drinker (at clubs, parties, probably about 14 units a week?), with anxiety, depression, chronic insomnia and ASD.

The last three months my pupils have been almost permanently dialated. I don't take any prescribed meds (although I do take Vitamin C + over the counter antihistamines most days) and all of my mental health conditions (named above) have not become any more or less prominent in the time this has started. My eating, sleeping, drinking, etc has also not changed in any way during this time.

I feel pretty normal and in the last six months or so I've been much happier and more carefree as my issues with anxiety and depression have become far less prominent. Insomnia still much the same as ever and autism hasn't changed in experience at all. The only difference in my life is that I got a boyfriend three months ago. It's a healthy relationship by all accounts though and I feel very comfortable in it so I don't really know how it could be related at all.

I'm not really concerned to be honest, I'm just very curious why my pupils are nearly always so dialated now. Don't have a picture but it's like the level of dialated that some of my friends on heavy post-op pain meds got in their eyes.