Loula, frequent feeding and avoiding tight bras etc are the best tips. In the early days especially many mums have too much milk. If your breasts are still uncomfortably full after a feed, it is a good idea to express enough off for comfort. And if you do have a blocked duct, clearing it quickly is important. But don't worry, you will get plenty of great advice on here if you need it, and there is also the ABA 24 hour help line - 1800 mum 2 mum (1800 686 2 686, drop the last 6 for VOIP).