I have been taking 50 mg of Lamotrigine a day, 25 mg in the morning and 25 mg in the evening. I have been taking these meds for about two weeks now, I have noticed throughout the last week I’ve had a really bad hip pain and upper leg pain, a little bit of shoulder pain. It feels like it’s more of a muscle pain, so if I sit too long it’ll start to hurt when I get up and try to walk. When I walk I feel very stiff in my hips and upper legs. I feel like I just did an intense workout and I’m feeling the muscle pain two days later. That’s what it feels like. Is this a sign of an allergic reaction or is this something that is a normal side effect?