Been feeling dizzy off and on all day

🦋

I’m 22 weeks and off and on all day I’ve been feeling dizzy. I have eaten chips, 3 small pieces of a brownie, a few bites of fried potatoes and recently pizza rolls. Could it be that I haven’t eaten enough or? It could be dehydration (I couldnt drink any water today because we don’t have any bottled water) like I’m not gonna worry but it sucks