You shouldn't use contraceptives that use combined hormones (CHCs) in the first six weeks after birth, because it may reduce your milk supply. 

Other types of contraception that don't contain oestrogen are usually recommended. 

Contraceptives that use combined hormones (oestrogen and progestogen) are the pill, the patch, which is like a plaster that you stick on to your skin and the vaginal ring, which is a flexible ring that you insert into your vagina

 

Whichever CHC you opt for, the fourth week after you start using it will be a contraception-free week. At this time, you may have a withdrawal bleed, which is usually lighter than your normal period. CHCs are more than 99 per cent effective, if used correctly.

If you take a type of emergency contraceptive pill (ellaOne) you won't be able to breastfeed for 36 hours afterwards.