worrying and anxiety

i had sex on the 8th of january 2012 and on the process, the condom broke 5seconds before i unknowingly ejaculated in her and about some days later, i developed a burn sensation running from the upper stomact to the throat and sometimes it stays there, then i thought i must have gotten a throat infection from the opening of mouth during road cycling which made me to start taking antiboitics, like asif i was self medicating. From then till i got tested on d 9th of febuary for HIV antibodies i was feeling weak and everymorning i wake, i normally have this feelings of vomiting which makes me to avoid food but finally i'd try and eat and had headaches too, diaohrea with sometimes a colourless mucu-like stool and sweat for like 1-3nights but my mind was thinking its because of the drugs which i over took or because of the anxiety and worry, but seperately i still worried about having HIV. So after my test on the 9th of feb, i came out negative for antibodies and i was so happy and relived then i had to go back to college then in college i kept on with the diaohrea and that sensation of vomiting so i had to meet the doctor and he prescribed drugs for me and i took and the diaohrea went away both the feeling of vomiting and i was happy again and i continued with my ulcer drug because i have ulcer. Then during and after the drug i developed allergies like after swimming i will be down with running nose and headaches and sneezing even earlier after my first test i had nasal congestion which turns bad at nights and during that time i was on some anti depressant drugs and some drugs for psycho because i almost killed my self by taking a good amout of detergent in water and toilet cleanser....i got so confused that i just had to wait a little more time and see how the feelings i feel subside but at the long run, more kept coming up like aches i think i normally get from the gym, the worse of all is that i develop itchings on ma scrotum and around that area den i started applying sreams to ease and heal but the itching only stoped but i now started seeing spots in my genital thigh which was very much lighter than the colour of my skin and a full change in colour between my penis and the scrotum but that one have been same that way till now, then the ones around the thighs refuses to heal...so i had to leave college and i went back to my family house depressed and worried that i started crying because i never wanted to be infected with the virus and reading some journals too made me more scared, so i had a general test on the 25th of march and the result came and said that everything is fine with me even the HIV was negative and after then i that feelings of vomiting left and came again on the 13th of april and with that burning sensation that comes from the upper stomact to the throat and sometimes it goes back when i am standing and flows to the throat when i am laying but this time around, it kept that burning sensation on my throat and it relives a little when i take cold water and the next morning, it disappears leaving me with hoaresness and sometimes when i sing in the choir i have pains in my throat and becomes tired of singing....so now I'm thinking of how to kill my self and get free from all these but my loved ones keep appearing in my mind and then i start crying. Please someone should talk to me here and tell me what to do, do i have hiv? And on the long run I'm so very much afraid not to have because i have a fiancee which i love and she's a virgin and i want to marry after college..so all these thinking makes me want to kill myself..please someone to tellme what to do before i commit sucide and i mean it. Please somone shld reply me and my feelings now is that i still have that feeling of vomiting, that's all and back ache i can bet its form the gym sitting on a chair without a back laner and some other activities i do......PLEASE i just want to here someone talk to me. I'm really waiting, i've not gone for lecture for some days now, i have not eaten, i locked myself in my room thinking of how to kill myself and my loved ones keep calling and begging and i start crying i need to talk to some one and i need that from here..pleas save my life