Undecided Question

My whole body is sore :( ?

Three days ago, my body started aching a little bit. I didn't really think anything of it. Today the pain has spread all over and my body is sore and tender. Mainly, my breasts, stomach, upper arms and whole legs. Not excruciating pain; I can do everything normally. But if I just touch my stomach or anywhere even gently, it hurts enough to make me wince. Even showers hurt.

Details;
-Fully developed, couldn't be growing pains (I'm 18, but I haven't grown in the slightest since I was 14)
-Period is not due for another 8-10 days. My breasts get sore during my period in this same way, but never to this extent and never my whole body. And not usually until 2-3 days before my period begins.
-I just did 2 weeks work experience in a child care, finished last week. It involves a lot of bending down/picking up which would explain the legs arms and stomach, however it doesn't feel like muscles aching. It feels like full body bruising just under skin level. And it's an entire week delayed if that is the cause. I've had muscle aches from it but it went away within a day.
-Not sexually active, if that means anything.
-Haven't done anything out-of-ordinary in the way of physical activity

That's all I can think of at the moment.. Does anyone have any ideas at all of what this could be or how to fix it? Should I just wait it out even though it's getting worse before better?
Thanks so much.