Bloated??

This may seem like the dumbest question but I swear when you’re in these situations everything you know goes to shit...

So two weeks ago I had my period. It was longer than normal and so much more painful, so it kind of scared me a little. I’ve been trying to watch what I eat and this week has been one of my good weeks. I’ve had bananas for breakfast, salads for lunch, and lemon water throughout the day. For dinner tonight I had a small portion of spaghetti and a small salad. After dinner me and my boyfriend decided to go to sonic for a milkshake and I got a small. I drank about half of it and we laid down to watch a movie. During the movie my head started pounding and my stomach started hurting like I was about to throw up. Then he realized how much bigger I looked. I realized I looked bloated asf. I don’t think I could be pregnant because I just had my period. But could this be because of the milkshake? Or the pasta making me this bloated? Thanks for putting my mind to rest.