id go to a aqua fit class, thats what i did.. and it was great, everybodys in the same boat, i made my husband go the first week as i didnt wanna go alone and he stuck out more than me as he was the only fella bless him, but as it goes i was 21 stone then and was not the biggest in the pool and there were no kids (who are usually the cruel ones) id say just go for it.. really good work out too!
nic x