<human>: Give me a shortened version of the text

Here's an example, in case my question doesn't make sense. Yesterday I went to the store and while I was in the check out line the cashier started staring at my stomach. Normally, this is followed by one of the normal questions (when are you due, is it a girl or boy, are you miserable in this heat, etc). However, this lady didn't say anything. She rang up my purchases and told me my total. I handed her my credit card, she slid it, it processed fine, and she froze...still staring.  She was an older lady (in her 60's, I'd guess). It literally took her so long to give me my card back that I was afraid she was having a stroke or something. Finally she handed my card back (which I took with my LEFT hand, obviously flashing my wedding ring at her...ya know, in case she was thinking "what is this girl doing being pregnant so young" [[I'm 21, but I'm not sure how old I actually look these days]]). I thanked her and said have a nice day then I booked it out of the store. 
It was the most awkward experience I've had since I've been pregnant. 
So my question is, what the hell do you think she was thinking?
<bot>: An old lady stared at my pregnant belly for an awkwardly long time without saying a word. What do you think she was thinking about?