Is it in my head?

I went to the ER Monday because I was having really bad menstrual type pain and super dizzy. They couldn’t find anything wrong. (I’m 16+4 weeks pregnant)

Tuesday I went in to my regular OB, basing it off of symptoms she said that everything with my baby boy is fine, but I should call if anything changes.

Well yesterday, I had to call because I just felt like I was getting worse. I was taking breaks every 1-1 1/2 for 10 min, I’ve been eating lots of good food, since I was on a weight loss journey before pregnant, I’m drinking the recommended water, I’m taking all my prenatals, I’m even slowing my work production.... So I had to go back in and get more blood drawn.

It’s just frustrating because I’ll wake up fine with just a headache, then throughout the day even with breaks (I work on my feet 8 hours a day), I’ll start to slow down, want to just sleep, feel super nauseated, go completely pale, my ears feel hot, I can’t concentrate at all and have a really hard time at work.

Has anyone else struggled with this?