Hair tips. . .PLEASE help?

Okay, so I use to have long thick wavy hair . I wanted something different so I cut it into a swing bob. big mistake. A year has passed and its about 2 inches past my shoulders. I keep cutting it because split ends . I miss my long hair so im trying really hard to get it back this summer by not touching it (straightner,curling etc.) Im also on prenatal pills because Ive heard they work . Any more tips or remidies that can help me? Please and thank you!