I recently went off to college, and set a goal for myself to lose some weight and stay healthy instead of gaining weight that I was so terrified of. I succeeded too. I've lost about 15 lbs by cutting back on the junk food and exercises daily. My boyfriend and I had unprotected sex a couple times this month, and recently I've felt really bloated. Like I'm gaining the 15 lbs I've lost in my stomach. I feel huge, but when I weigh myself the number on the scale doesn't really change. I've also been cramping, but my AF isn't due for another two weeks, and my periods are VERY regular. Like to the hour. I, also, don't normal bloat until I'm actually on my period. I was curious, how soon do women begin to feel bloated after fertilization? Could it possibly be an early sign of pregnancy?