Mefenamic acid = Ponstan: mainly for period cramp, some effect on flow
Tranexamic acid = Dicynene (sp?): mainly for flow/clots
Neither of these will have any effect on mood - other than improving it when your period is not so bad anymore, I suppose
.
Progesterone only pill ("mini pill"), Depo-provera ('the jag') and Nexplanon (formerly Implanon) all contain only progesteron (natch), usually cause periods to stop, but quite often cause mild nuisance bleeding randomly, sometime a lot of nuisance bleeding.
Mirena (progesterone again) intrauterine system (looks like a coil, goes where a coil goes, but works in a totally different manner from a coil) as mentioned above.
D+C: tends to give temporary relief and gives the reassurance that there is nothing 'wrong' ie cancer.
Endometrial ablation: laser or surgical, works v well, not as invasive as hysterctomy
Hysterectomy: vaginally (less big operation, quicker recovery) or abdominally
Antidepressants/'SSRI's: work for PMT, obviously does nothing for heaviness of flow/pain.
There are lots of options and yes, it can be souldestroying if you have tried various things and nothing seems to help. But keep going back - even if there is no Magic Bullet for you, surely improvement should be possible.
By all means have your blood count, iron stores (ferritin) and thyroid function checked, but I'd totally agree, if things are so bad for you, get referred to a gynaecologist.