Mindfulness is leading to anxiety and depersonalisation

So I was doing breath meditation each day for 30 mins or so for around 2 years. Then over the past year I have found that it is causing me to feel strange and anxious when doing everyday tasks. When I meditate I don't feel the symptoms but during the day when I have to start thinking the symptoms come. When its at its worst loud sounds can make me feel very odd (e.g. someone shouting or laughing suddenly and loudly). However, if I have to speak and have a conversation then the symptoms tend to go. It's very frustrating because meditation has been such a great interest for me and has helped me so much in lots of other areas that I am reluctant to give it up completely. I am a pragmatist though and if the right move is to give it up completely then I will do that. Has anyone else had any experience of this or got any advice. Obviously its a tricky thing to advise on as you don't know the entirety of the situation but any help would be really appreciated. Cheers