Period due in a about 3 days.

I feel like there's gas bubbles but no gas. I'm extra moist down there but nothing thick or smelly.

My boobs have been feeling bigger and really firm but softer and really warm last night. Also slept an extra 3 hours this morning.

Is this weird, is this normal? What's up?

I've been pregnant once but didn't know until miscarriage during the second month.