Any way to Shorten Refractory Period

My period has more than quintupled in the last two years, this seems really extreme and I am worried it will continue to grow too fast.

Yep. Practice sperm retention i.e. holding in your ejaculation. You can learn to do this by performing a kegel as you orgasm. There’s plenty of information around on kegels. Also look for ways of improving your circulation. Free weights such as squats, leg press, deadlifts etc. Running, cycling, skating. Lower your colesterol. Conside supplements such as gingko biloba, l-arginine.

Ok I guess it might have alot to do with not exercising, I have had back problems so stopped lifting weights and playing sports. Hopefully I will be better in a couple months or so