Your risk from your encounter back in July was only from the oral sex. The vaginal sex was protected (and, I'm assuming, the condom was used accurately and did not break or tear).
You have gone through considerable testing of both bacterial and viral based STD/STI's ALL with negative test results.
Testing for bacterial based STD's such as gonorrhea and chlamydia look for the actual presence of the offending bacteria. Same with testing for parasitic based STD's. As such, this testing can be done quite soon after an exposure. These tests have been negative.
Testing for viral based STD's such as hepatitis and HIV look for antibodies the immune system begins to produce after transmission has taken place. By one month post transmission 95 percent of newly infected folks will have enough antibodies present. By 3 months this has increased to 99.99 percent. Again, you have testing negative for these too.
STD's do not cause burning sensations across shoulder blades and under the arms.
Your white sticky discharge after having a bowel movement is likely semen discharged with the pressure of the bowel movement. This isn't unusual.
You indicate having clear sticky discharges before this sexual event. What you seeing now is likely nothing more than this again but you are so focused on the issue that you must have some disease from this sexual event that any symptom tends to feed into what sounds like more than a bit of paranoia regarding all of this.
Your post is hard to read because of your poor spelling and grammar. I'm going to assume English may not be your first language.
Your friends telling you these stretch marks on her thighs means she has been pregnant before is inaccurate. Neither does her "hanging breasts" and "belly". When one gains weight (even a small amount)...and not from pregnancy either...the skin can stretch a bit, leaving stretch marks on thighs and the lower abdomen. This in NO WAY guarantees that this took place due to a pregnancy.
Her "wide" vagina is also not a sign that she has been pregnant before. It's likely either a sign that she was aroused when you had intercourse with her or that you have a small penis.
Her telling your family that you are blaming her for no reason is accurate because, frankly, you ARE blaming her for no reason. This is a 30 year old woman; not a teenager. Her body is going to go through the very normal changes seen as we mature as females. This doesn't mean we're cheating with someone or have had previous pregnancies when we haven't.
Either knock it off or seek psychiatric help for your obsession that she is cheating on you when you have no real knowledge of any of this. This is tearing you apart and destroying your marriage. And stop asking advice from your so-called friends; they don't seem knowledgeably enough about this business to be able to chew gum and walk at the same time.
There is no reason for prayers. Honestly. You're not "put to sleep" for an extended period of time.
Any procedure that requires light sedation also requires that you have someone to drive you home afterwards. That's to "cover" the medical facility doing the procedure. And that's why I mentioned there are some folks (men, mainly) who have this done routinely and opt not to have what is known as the "twilight sleep" so they can drive themselves back to work later.
For a chuckle, read one mans experience with the prep and the actual procedure. He's pretty accurate about the entire business:
The scope is flexible; needs to be to make the turns around the colon (think of the large intestine as normally resembling the number "7"). The procedure itself typically takes only 15 to 20 minutes. If "something" is found (and this is typically a polyp) many times it can be removed during the procedure.
A light sedative is used because there can be bloating and pressure felt during the procedure.
We have many patients on various blood thinners. Prior to any procedure, all medications are addressed. Since colonoscopies are now a fairly routine part of "well person" care, many on these medications will undergo this procedure and do perfectly well with it.
You don't need to be "put to sleep" during a colonoscopy but having undergone five or six of those, you'd probably like to be out of it (I asked to be awake during my first one until that first turn in the colon). There are, however, (mainly men) who ask to undergo these totally awake so they can leave afterwards and go immediately back to work.
Typically what is known as "twilight sleep" is used; very, very lightly being put under with a slight amnesiac effect. The entire procedure is quite short and thus you're "out" for a very short period of time.