Vent: Insensitive people commenting on TTC'ing...

Sommer
I was in Walgreens today getting my OPK's. While ringing my purchase up the cashier states "I never had to use these! I have a five year old and I'm two month pregnant." I didn't know what to say. All I said was congratulations. Then she says after looking at my face which must have been giving her the side eye "I wish I could time my pregnancies...good luck!" This is my fifth month TTC'ing. Not really a long time but it feels like forever. I took offense to the comments to the point I was ready to cry. Am I overreacting or being super sensitive? Has anyone else dealt with insensitive comments when TTC'ing? How did you handle it?