Help body aches

I need mom advice.

I work 4 days a week. 6 hours a day and I’m absolutely miserable. My body hurts so bad im not able to stand straight up. And the heat makes it worse in the kitchen. I’m drinking almost 2 gallons of water, it’s not helping I thought it was dehydration.

So I’ve been taking epsom salt baths and they are magic! But now I’m unable to soak in a bath longer than 10 minuets because the pressure on my back causes my bp to drop and I get faint and sick. I don’t want to quit working because I need the money, but I’m afraid if I ask for my hours to be cut back that they won’t give me my hours back after I come back from leave.

Like what can I use? Can I use the icy hot pads for my lower back? What insoles are the best? Do I need to buy a bigger size shoe for insoles? I know I can use bio freeze but I don’t have any. I’m literally crying at work because I’m in pain and unable to do anything. I’m slow af because every time I move I’m hurting. I’m exhausted. I’m physically exhausted but I need this money I gotta stick with it till August and I can go on an early leave that’s 3 months. My doctor said Tylenol should take care of the aches. Tylenol helps. But my legs and feet are still swollen af. Sitting up in the bath helps but then I can’t soak my back. Uggg... 18 weeks.