I Didn't Have Periods Last Month. So I Took Devril(period

I didn't have periods last month. So I took devril(period inducing tablet). But I took Only 3. After 5days I started having little spotting of blood. But for only 1 day. Then it stopped. I thought my periods have started so started taking ginette35 to make my periods regular. I took only 1,on the day I had spottings but not heavy bleeding. But the next day,I am getting no spottings or bleeding. What to do? I have started to take ginetter 35. Should i continue? What about my periods?

Ps: I am sexually inactive for 7months. Hence not pregnant.