stomach problems, period problems, please read!?

I've posted this may be a couple days ago but I forgot to add some stuff =)

Subject: bloating and feeling fat after eating?

after I eat meals (usually large meals sometimes small meals) I get really bloated and I feel like I'm fat. when I lay on my stomach it feels really full. and my stomach makes really loud noises after eating (sometimes) what could this be?

Subject: vaginal problems

for the past couple weeks (maybe 1 or two) my privates have been very very itchy. i dont know why. sometimes when i sit down it hurts, too. could this be yeast infection or something different?

Subject: a lot of gas

I've had a lot of gas the past few months, for the first month i thought it was normal. but then it kept on going. even after my period the gas wont go away. why is this?

Subject: feels like heartbeat in lower stomach

whenever i lay down it feels like a heartbeat in my lower stomach. I did some research and it said that it could be a disease or blood pumping down for my period (but i already had my period and ended a few days ago?) what could this be?

thank you so much for your time!

if it helps I am not a teenager yet.

please post whatever you know it would be greatly appreciated (: