Confused?

Hey ladies, I posted on here recently about possible pregnancy symptoms or something else. Some said it was dehydration from drinking but more symptoms have came. So during the holidays I was doing some drinking and puking every time (not normal for me and didn’t drink ALOT) and was having pretty bad migraines. So AF showed but was a lot lighter than normal I usually have pretty heavy periods and this last one was lighter, have had headaches, tired, bloating, slight pain when I do abdominal exercises, constipation, mood swings and twitches in my lower abdomen. Still wonder if I could just have a bug that’s going around the office or if I could be pregnant. I’m nervous to test bc I’ve gotten SO many negatives. Thanks!