Meralgia paresthetica is compression on a nerve that causes numbness, tingling, or decreased sensation in the upper, outer thigh. It sounds like in your case it's due to the fact that you have a growing baby inside your abdomen that is compressing on this nerve. Unfortunately I don't think it's going to get better until you have your baby. There are medical conditions and other things like obesity that can cause it but I'm pretty sure in your case it's that you're pregnant. Unfortunately there is no good fix and you may just have to put up with it for a couple more months. But if it doesn't resolve after you've had the baby then it would be a good idea to bring it up with the doctor. If you have any other questions for me feel free to ask them on our Facebook page and recommend us to your friends and family too.
