Every night!

So every evening/night when I eat dinner, doesnt matter how early or how late, but it seems like after I eat dinner, I get horrible cramps, I'm assuming its gas. But it hurts and my husband isnt being the most understanding person at this point. Bowel movements have been different since I became pregnant and I'm 9 weeks 5 days, different as in not every single day/every other and super hard and I always have to go back hours later to go again. So could it be something I'm eating, or not eating? I try to drink plenty of fluids like Gatorade and water and whole milk since nothing else agrees with my stomach. I dont know what is going on or what to do but it's annoying and painful, and I dont want to out "fart" my husband 😂 because honestly I sound like a big man when I pass gas 🤦‍♀️ any advice or tricks?!