Just started BC need some advice...

Bryana

So I just started a new birth control. It's the pill. I only did it to regulate my cycle mainly because I am afraid I wont be able to have anymore children. I have 18month twins and ever since I had them may 2017 I haven't had a period at all of course I bled after giving birth but I never had a period after that...... so with that being said i just started the pill and i took the 14th pill today which means I'm only 2wks in and I started cramping really bad today and now im bleeding but idk if it's a period or what because my doctor told me I shouldn't have a period until I get to the week with the white pills but I haven't even gotten that far yet I'm just scared and confused I really didn't want any kind of birth control in the first place but my doctor insisted it would help me get back on track....... HELP!!