I Noticed That The Outer Part Of My Vagina Is
Normal labia color and travelers diarrhea.
Detailed Answer:
Hello dear, welcome to Ask a doctor's service.
I read your query and here is my advice
I see the photo you attached and the vaginal outer lips look darker than the other part of the skin.
This is completely normal because genital organs normally have darker skin then body.
There is no way that you can be pregnant because your blood test was negative and also you had bleeding around the time your period was due.
I think it is a good thing you did a stool test to check for bacteria or parasites.
The symptoms you are having may be related to travelers diarrhea ( taking count that you were in Spain) caused by having contaminated food or water.
It can last for one or two weeks without treatment
You can take loperamid for diarrhea and probiotics such enterogerina or yovita to re-establish the intestinal flora.
Hope I have answered the question .
Let me know if I can assist you further.
I don't think ultrasound is needed.
Detailed Answer:
Hello dear and thank you for asking again.
I think your darker color in genital region isn't abnormal and it doesn't indicate a condition.
About a pregnancy test ,a home pregnancy test is recommended to be done 5 days after a delayed period but doing a blood test is highly accurate and can show early results as days or weeks after conception. You did the blood pregnancy test a week before the period so it is highly accurate on showing pregnancy.
You are right that spotting is common during pregnancy but bleeding like a period is not normal.
It is not much normal that travel diarrhea can last for 6 weeks. I think you should do a stool test because it can be infection parasites or bacterial infections such as echerichia coli.
I don't think the ultrasound is needed.
Let me know if I can assist you further.