FTM- I know it sounds stupid but I am worried...

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So before I get hateful or snarky comments - let me get it out of the way that I am a FTM and after struggling with fertility issues and managing to conceive naturally, this is our miracle baby. So snarkers, please do not comment or execute your first amendment right - I am a real person with a real concern.
Morning sickness ended week 13 for me.  Today, I randomly puked my guts out (just in time to recover, wipe the sweat from my forehead, and rush out the door to work.  I didn't feel nauseous, just... gross. That blah feeling.
I don't eat sushi (though I am jonesing for it like no tomorrow), nor do I eat deli meat.  For all you moms out there who have passed your second trimester, have you experienced this? I am terrified of listeria and food-borne illnesses, but I can't imagine what I would have eaten. I am just worried that something is wrong.  I don't think I will stop being nervous until I feel my baby kick again.
I noticed that I felt especially bad after drinking milk - have any of you had that experience too?