Last night I started having lower back pain. I was on my feet baking cookies so I thought once I get off my feet I'll be fine. (I usuallly never have back pain.) However, it still hurt during the night while I was sleeping and now today I feel it in my upper back as well. It's very painful. I tried some stretches with my fitness ball but it hasn't helped. I'm going to take a hot shower later, but what else can I do? I feel very stiff. Is this normal? Oh and it's not from extra weight because I'm actually down a pound from before my BFP.