Feeling clogged up

This has been happening for the last couple of months and used to only really happen when on a drunk night out i bought some food like a pizza etc, but its so much worse now. Ive been struggling to go to the toilet and my stomach feels horrible, as i said it used to happen with foods such as pizza which is obviously bad for you and i can understand how it could clog me up but its now lead to things im not sure how to deal with.

I started a low fat diet a while ago where i was mainly eating fruit and i was going to the toilet about 4 times a day and my skin wasnt doing to bad then so i thought i would aim to go for it again. But now just eating one piece of fruit like an apple, peach or maybe a few grapes, my stomach feels instantly crap and i know i wont be going to the toilet for a while. What exactly could the problem be when just one piece of fruit causes problems? Has anyone else experienced this?

Yeast infection

Ages ago i took antibiotics for quite a while and now my skin is defiently in a worse state than it was a fair few years ago now. Im pretty sure i suffer with candida and been stupid like i am at times i ate loads of bread over the week or so. One morning i woke up and i felt pretty down there and really itchy. Its looking more and more sore, getting really itchy and ive even noticed a white liquid now. Im pretty sure im now suffering from a penile yeast infection, could eating aload of bread have caused this?

Ive got a doctors appointment booked but they will just put me on some sort of antibiotics wont they? Thats not what i really want so is it best to just completely give up the bread (which i now have) and any foods containing yeast and see how it goes or get to the doc as soon as possible?

Pasta

I want to start giving myself a more varied option of foods instead of just fruit and veg, im trying to avoid fatty foods and i just end up cheating because im struggling to just consume fruit and veg all the time. Im going to start on sweet potatoes and brown rice alot more, and i was wondering if fat is the problem would i be able to eat pasta okay? I know alot of people say its bad and one to avoid but i was just wondering? I have found this one, claims to have only 5 grams of digestible carbs, a low glycemic index, twice the amount of fibre than normal pasta and 0 grams of trans fats. From the sound of this would it be okay to eat them?

How to gain weight on low fat diet?

I really want to gain some weight, especially on my lower arms as they just look like some bone with some skin slapped on!! Fat defiently makes my skin worse so i want to go on a low fat diet for a while but keep messing up, my skin keeps getting worse though so im getting more determined to stick to it this time.

With this sort of diet though im worried i will lose weight and get even more skinny. Obviously i will be eating fruit and veg; could eating quite alot of fruit help at all to gain weight? Other foods im hoping that will help me to gain some weight are brown rice, tuna and sweet potatoes, will they be much use? What other foods can i eat?

Bleeding Gums

Has anyone had to deal with bleeding gums before? Pretty much everytime i brush my teeth now there is blood and also when i eat hardish fruits like apples. Ive also just noticed on the gum around my top teeth is a little bit redder than anywhere else. Im starting to get abit worried about it and not sure what the cause is at the moment.