Constipation 😖

Ladies I drink at least a gallon of water everyday, I work out, no processed foods, pretty healthy choices although I have the occasional dessert or chai latte. I’m 22 weeks with my third at 33 yrs old. I had my first two at 23 and 25 yrs old with zero complications the whole pregnancy. This pregnancy I’ve already fainted once from low blood sugar and I feel woozy sometimes after I eat or when I first put my mask on at work. Apologies in advance for the following TMI but I’m miserable! I noticed a change in stool around 17 weeks, only because I’m pretty regular and they normally pass super easily. It was more compacted then but now I feel completely constipated and it’s uncomfortable. I used to go daily every morning like clock work, now it’s random and slooooow. Any of you experience this??? Any remedies?