Always hungry?

I’m 18 weeks and the past few days I’ve been soo hungry. not even like I’m craving food, but my stomach is alway growling and hurting like I’m so hungry. I feel like I can’t keep up with it. I also found out I’m anemic and have had a virus the past few days which I took Tylenol for. is this normal for 18 weeks or is it the virus or the anemia? thanks