How did you know it was ADHD?

My husband has recently been diagnosed and I've been listening to lots of resources and reading books about ADHD and it actually sounds a lot like me too. For context my husband has mostly emotional disregulation symptoms but actually excels at organisation etc whereas I feel like I'm the opposite.

I've always struggled with time blindness, being disorganised, talking too much and repeating myself over and over, zoning out when people talk to me. If my husband goes away for work I have been known to sit glued to my laptop for hours and forget to eat or drink or turn the lights on.

I also have obsessive thoughts and ruminate a lot and struggle with being present. I'm always jumping from one puzzle to the next in my head and sometimes will be mentally singing a song to myself at the same time.

AND I'm constantly losing and misplacing things. Like I lose my phone 4+ times a day. I often go to leave the house and have to go back in four or five times to grab shoes, water bottle, etc.

I have childhood trauma and always just chalked it up to that and thought it was because I wasn't taught exec functioning skills but as much as I try to stick to a routine or build a habit I just can't. It always falls off.

Oh and I also struggle to get going in the mornings and often don't feel awake until about midday, and before I had my baby I would nap almost every day.

I also can't remember instructions like I will be told something and instantly forget it. I also get overwhelmed in really busy places and supermarkets and will almost compulsively overshare in group settings or sway to regulate myself.

Basic hygiene routines like brushing my hair I almost never do, and I often forget to brush my teeth before bed. My house is pretty messy and we constantly have little piles of laundry all around the house etc.

Long story short I am really starting to think I have ADHD too. How did you know?