Missed period and pregnancy symptoms and a negative home test

Hi i would like some advice here for me as i am in the middle of a crisis from what is going on to my body.

I am 28 years old with a 2 years old boy.
I have symptoms such enlargement of my uterus, creamy [elastic] white discharge, dizzy, i faint once which if i am pregnant i was about 2-3 weeks, want to vomit but no actually vomit anything, burp, gas, left side painful sometimes and now i have this insomnia and is killing me ! moreover i am about 13-15 days late but usually i am on 28 cycle!!! No stressful period as i am usually like this but if i have the stress my period usually is 2 days up-and-down but no more than 2 days.
Back pains and weight gain [2kg] it may be because of the bloating and feel hungry like unusual hours ...when i see my uterus like this i look like when i was 4 months pregnant is really bloated all the area there....I used to have abs but now i can even to anything to prove to my self that i can ..i can't do any exercise as i feel pregnant with this enlargement of my uterus.
Also if i am pregnant i shall be 6 ? weeks only...which is unusual to have this so early according to my first time !!!


First time pregnancy i done a pregnancy test at my first missed period and it was negative and i found it when i was 3 months pregnant !!!

I did never experience this symptoms during my first pregnancy only one time when i was 3 months old and i found that i was pregnant ...

They say that many pregnancy negative means you are not pregnant but i don't believe it ..

Can you please help me according to my symptoms what is may happening to me - it so stressful, i have to sleep 2 days now !!!!!

Please help me

Thank you !!!