If you use the Sunday Start, use non-hormonal back again-up contraception such as condoms and spermicide for the first 7 days you take Previfem®. You do not require back again-up contraception if you use the Working day one Start. Just after a primary-trimester abortion or miscarriage, Previfem® might be started https://viorele-generic81245.sharebyblog.com/30120689/getting-my-tri-previfem-to-work