Exercise Rut - help please!

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Hi I exercise regularly and eat right. So far I've lost 26 lbs and dropped 2/3 dress sizes in around 3.5 months. I measure my inch loss every week and up until now its been pretty steady. However for the last 4 weeks I've barely seen any changes despite the fact that I am still losing weight. I've only got another dress size or two to go before hitting my goal so I appreciate things will get harder. But I just wanted to know if anyone had any tips on shaking this rut I'm in, or should I just keep going and eventually the results will show?