What are the symptoms of juvenille arthritus and arthritus or is there something else this could be?

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Is it in your knees or the muscle in your calves as well. One of the most common causes of cramps and pain in legs, which are often mistaken for growing pains is lack of magnesium. I used to get severe bad cramps where I almost couldn’t walk, especially at night and it helped for me. In any case, here are the symptoms of juvenile arthritis

The first signs of arthritis can be subtle or obvious. Signs may include limping or a sore wrist, finger, or knee. Joints may suddenly swell and remain enlarged. Stiffness in the neck, hips, or other joints can also occur. Rashes may suddenly appear and disappear, developing in one area and then another. High fevers that tend to spike in the evenings and suddenly disappear are characteristic of systemic juvenile rheumatoid arthritis. Source: http://funadvice.com/r/bdt2b01lbie

have you ever had your knee fully examined? another possibility besides arthritis is it could be your torn a meniscus in your knee when you were young and it still causes you pain. it could be something minor of a tare but it could be a possibility. and since your pregnant that is more weight your knee has to support so if by some chance you did tare your meniscus years ago, the cartilage on the ends of the bones may have worn away by now and since there is more weight your body has to support the bones can be grinding causing more pain more frequently.