Definitely ask for copies of your blood test results. If they say GP will have to ok them & try to fob you off that’s fine. Ask them to let you know when they will be ready to collect. Every practice has to make the available - as part of Patient Access.
See if everything you were told has been tested for. Check results & that the action advised correlates with the action you were given. Ie Repeat 3months etc. I was insufficient for Ferritin & Vitamin D. Action advised on printed blood test instructions had NFA in pen against it - mistakes are common. Even when politely brought up with a female doctor, in view of my ongoing fatigue & other problems, she got defensive & reluctant to give me the now lifelong supplementation, I need & benefit from.
B12, Vit D, B12, ferritin (needs to be tested separately not just iron) magnesium all essential for mood/fatigue. Thyroid cannot function optimally if all these not optimal either.
Women lose so much ferritin via periods that often not replenished via western diet. Before you start supplementing yourself look at your results first to get a baseline & see if anything going on against what they should be for your age etc. GP’s tend to view these very poorly IME. Probably not seen as that much of a concern - but can make a huge difference in people’s quality of life. If you need to be medically supplemented they should be doing this not yourself.
Thyroid - check if full Thyroid testing been done. Mostly only basic tests are that don’t cover full Thyroid function.
Thyroid UK great source for explaining tests, ranges, results & how to ask to be taken seriously by GP. And what other tests to request.
Blood sugar /diabetes - I resorted to a private Endo as not listened to by GP. Didn’t like to come across as being a nuisance & thought I will pay the cost for quicker stress free help. They couldn’t believe I wasn’t offered correct testing in view of test results & symptoms & wrote to GP to request they do them. Like why?!
I’d also be asking about hormonal & endocrine function in view of weight gain & your periods stopping too - although found this (hormone testing) impossible via my GP for which along with the above the private Endocrinologist had to request it be done.
These investigations were therefore legitimately required, yielded clinical conditions, diagnoses & treatment, yet were extremely difficult to be obtained.
Am absolutely not a doctor but have learned the hard way to take health into my own hands more, out of sheer necessity. And not trust the blanket “all bloods are back as fine”.
Don’t give up.
PS that’s not to say am ungrateful for the NHS & realise the unprecedented pressure it is under. Just that it has a lot of systemic issues to answer for, women’s health being one of them. Within the system & on an individual level, there are equally amazing, caring & committed workers who deserve our utmost respect & gratitude.