TMI Back Pain

Lily

Ok so I’ve woke up this morning with this extreme pain in my lower Lumbar region of my spine. I want to say it’s from doing doggy style last night, but I’ve never gotten pain from it. We have done this position several times and this is the first time I got a pain in my back from it. I’m 20 years old so back pain is not usually a problem I deal with. Also should note the only time I don’t hurt is when I lay on my stomach. Any advice? Best remedies? Or even ideas to help avoid future problems?