Please someone help😰

Brittany
I am 32.5 weeks. Today, I forgot to take iron in the morning, and I was feeling terrible, like I had the flu or something. I was really weak and I couldn't focus for a while. 
Then, I dropped around 1700. I know it was the drop because a couple coworkers mentioned that my belly looked bigger and lower at the end of my shift than it did at the beginning of my shift.
Now, from 2300-2359, I have had 4 contractions. They're not really painful, just more pressure-like and uncomfortable. They're becoming more and more frequent. The last one lasted about 30 seconds. 
Should I be worried, or has anyone else had this issue? I'm a FTM.