Is it me or just my job?

Just ranting. I'm now 23 weeks pregnant and I work front line at a relative's eatery. I am very grateful and touched by many regular customers who would have small talks with me asking about my well-being every now and then just by them expressing their concerns, some even stopping me from walking about too much. While I have experienced this side of humanity, I do also have the unpleasant. Customers being rude or demanding, or some made me walk more rounds by not saying their requests all at once, customer whistling at me to get my attention.... etc etc. I'm not sure if it's me being too sensitive during pregnancy, but I do get pretty upset and would very much get affected for the rest of the day. I haven't talked to anyone yet, just thinking whether its me or is it just the nature of my job? Should I leave my job until after my little one is born?