OMG! I'm Pregnant & I Got Hit in the Tummy!!

I was at work the other day and I was doing some stocking. I went to put a shopping basket full of candy on the counter when I got hit. I thought I had cleared the counter, but the basket didn't clear the counter. The bottom of the basket clipped the edge of the counter and I was walking inward toward the counter, so I hit it as I could. It knocked the wind out of me. I called my doctor and asked her what to do. She said come in and get checked out. They hooked me up to monitors and watched me for a while. I and Addison are OK but that was uber scary.

Well I'm 27 weeks along and I go to see my doctor next week. I'll be 28 weeks along I wonder if its OK to ask her to write something up saying I shouldn't be lifting heavy things or if it's too early to ask about that. And I'm a cashier for a gas station. Will I lose my job If I cant do stock work? Can they even fire you for that? I'm scared of a lot of things right now, but I just feel it was too close of a call to be doing stocking and lifting at this point.

Anyone else been where I'm at?