Worried about may have contacted hiv

[Bebo17]

Back in April I started talking to this guy I met online. We became friends with benefits and always used condoms. I only was friends with benefits with him for a month. I only gave him oral sex twice in the month that I was friends with benefits with him. Well the second time I gave him oral sex I tasted a tiny bit of pre cum and only gave him oral sex for 15 to 20 seconds. A week later I got a very dry throat and swollen lymph nodes under my chin and a canker sore in my mouth. This lasted for 5 days and then went away. I'm scared that he may have gave me something. I asked him a bunch of times if he had anything and he said he didn't. He said he didn't have sex with very many women. A few days after the swollen lymph nodes under my jaw and dry throat and canker sore went away I got pain in my neck in my lymph node I think I'm not exactly sure where the lymph nodes are in your neck but it didn't look or feel swollen. Well for the past 13 days I've been having pain in my neck it comes and goes. It will last a few days then go away and sometimes the pain is in different parts of my neck. I don't have any other symptoms. I've been under a lot of stress though because of financial problems. I get canker sores often and I've had swollen lymph nodes before. I read that swollen lymph nodes are from infection or bacteria. Right now I'm suffering a urinary tract infection that's been going on for a long time and I've also been suffering from bacteria vaginosis and a yeast infection for a long time. I frequently get tested for STDs and have never had anything. I also have been having some nausea off and on but I think it's because of acid reflux heart burn, and my back has been killing me but I think it's because of this air mattress that I sleep on it's not very comfortable and I've been constipated but that's not new I suffer Constitution all the time and I've had slight headache sometimes but I think it's because I haven't been getting good sleep and this diet pill I'm taking called fastin causes upset stomach and constipation and headache. I've gotten swollen lymph nodes before I'm just worried if I got an STD or something what's the chance of me getting hiv from giving oral for 15 to 20 seconds and a little bit of pre cum in my mouth? I also forgot to mention that I have gingivitis.

[Bebo17]

And also I sleep with an account unit in my window and I put it on the coldest it gets and we also have the AC on in the house too and the vent is right over where I sleep so maybe that's why my mouth was so dry I don't know it's just never been as dry as it was those few days and we've been having crazy weather it's been hot in the day and cold at night and I also have pcos so my body is messed up and always doing crazy stuff

[Bebo17]

Also the medicine fastin that I'm taking one of the side effects is dry mouth but I've been taking it for two months or two and a half months and have never had dry mouth that bad while taking it I've just had very mild dry mouth but a week after I gave the guy oral sex my mouth was super dry. I don't drink very much water either hardly at all. But still I've never had dry mouth as bad as I did those few days.