Am I okay and how do I stop this?

Lately (past few days) i get nauseous after i only exercise for like 7-10 mins. Before (week or so ago) i could push myself for an hour or more. But now it's a few mins and I'm nauseous plus my hip starts to pain, i don't eat or drink before i exercise and i don't immediately go to the extreme stuff. This really sucks coz i want to exercise again and i don't know how to push myself or get over the nausea/pain. PLEASE help me also my legs are very stiff so it's hard to move them, tips for that? Thanks
Am I okay and how do I stop this?
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