I’m 35 and just got diagnosed after 15 years, 20 GPs, 5 psychologists and two psychiatrists and trying 4 types of anti depressants. I was first diagnosed with anxiety/depression which was resistant to treatment after so long that I did my own research and learned about adult/inattentive/female ADHD and all the pieces seemed to fit. I searched for a good psychiatrist who specialises in adult ADHD and received a diagnosis and have just started medication (hopefully I will see improvement!).
You sound pretty textbook ADHD, however you need to see a psychiatrist because they are the only medical professionals qualified to give you a clinical diagnosis and prescribe stimulant medication. They can be very expensive and some are not very good, so find one who has experience or specialsies in adult ADHD. In the mean time, you can take some ADHD self-tests (you can Google them), or download and self-administer the DIVA 2.0 test which is one the diagnostic tests psychiatrists use to help with a diagnosis.
I recommend taking the tests and seeing your GP and discussing a possible diagnosis. Bear in mind that some doctors take offence to people taking agency over their health and make suggestions and looking up information on the internet, so find a good GP who doesn’t dismiss your concerns (this has happened to me literally dozens of times). In Australia you first need a referral from a GP to see a psychiatrist.
It is likely ADHD but it could be something else or other conditions as well as ADHD. I was first diagnosed as Bipolar II which is common because they share many traits. ADHD also commonly occurs with other disorders, such as anxiety, depression, migraines, personality disorders, etc, so you definitely should see a psychiatrist.
The good new is, ADHD is one of the most treatable disorders and can be treated with stimulants, but you must take them for the rest of your life. Once you try stimulant treatment, you will know quite quickly whether you have ADHD or not! So take some tests and see your doctor and hopefully you will get to try the medication eventually. I guess that’s the only way you can ever actually know! Good luck!