Thanks for using HCM
As you had sex on 15th day of your cycle, which is unsafe period, chance of conception are there. you need to get UPT test test done.
Loose stools could be due to apple cider vinegar consumption, or it could be due to food poisoning
Take lot of fluids, ORS
, to maintain your hydration level.
If you feel very tiered and dehydrated, you may need to get consult doctor
for IV fluids.
Hope i have answered your query, wishing you a good health.