I feel your pain and lisa1905 is right it does get worse as you progress. I am 29 weeks and I told the doc today I have a lot of pressure where it is hard for me to walk at times. They checked me and everything was good.
I would inform ur dr, n take it easy. I had lots of pressure n had given birth 6wks early. I kno everyone is diff, but jus slow dwn on ur activity. :)
sadly yeah its normal. they will get worst each week. i hope u start to feeling better.