Hello Angiebaby1988,
The first 12 weeks of pregnancy are the more susceptible time where the risk of miscarriage is greater. Although there is no direct link between miscarriage and exercise and exercise certainly is not the cause of miscarriage, if it does happen we often want a reason why and exercise can get the blame. If you have exercised before and regulary going to Zumba classes you are OK to continue but if any complications, such as bleeding or abdominal cramps occur during or after your exercise, you must immediately seek your Doctor's advice and get checked out. For a list of these conditions. Here's a link to my blog : how to exercise safely in pregnancy: http://www.beez-kneez.co.uk/blog/?p=20