How to get rid of red bumpy and very itchy patches on abdominal during pregnancy?

I have got some red spots on my upper abdominal yesterday, now seem to be getting more patches and seems bumpy. Very very itchy sometimes, especially when i touch them. I am 26 weeks pregnant. How can I get rid of them or do I need to see my gynae. Can I continue to use my palmer's anti-stretchmarks cream which I had been using for the past few months?