I used minoxidil for 6 months, result were good.But I stop using it 2 years back.Now my hairs are falling.Should I use it again?

My hairs were falling 2.5 years back when i was 22 years old.. i start using minoxidil after using it for 6 months my hairs stop falling. But i start gaining weight so i stop it. I havent use it from last two years and my hairs are falling continuously. Now bald spots have also started to appear on my scalp. So what should i do? Should i start using minoxidil or not??