I had my periods on 27th December and it lasted up to 9th January. After 2 days I had minor bleeding for 2 days then it continued alternative days till 17th of January. Meanwhile I was having sex. I had taken an anti pregnancy tablet since 16 December till 12 January. Lately I had sex on Saturday (18 December) morning and night. I had emergency contraceptive pill on 21 January. Still I doubt am I pregnant. I went through a C section 4 months back, so I don't want to be pregnant.

Please help me.

If you don't want to get pregnant than stop putting penises in your vagina. Stop having sex. You can't get pregnant if you haven't had sex.

Baring that, use birth control. It isn't 100% but it will help prevent pregnancies. Condoms would be a start. Hormonal birth control too, but make sure it doesn't have any reaction if your breast feeding. You don't want any leeching into your breast milk or for the pill to dry you up.

As well only use emergency contraceptive pills in an emergency. Don't use them as a form of contraceptive. They're a high dose hormone that will make your cycle and period go wonky for a month or two. Your cycle is going to be very messed up for the next month or two.

But stop with the unprotected sex and don't use the emergency contraceptive pills unless you need to. Find a different method of borth control.