 [ Symptoms ] sex in july i have had period every month on time since then i have taken 3 pregnancy tests all negative am i being paranoid can i still be pregnant i am really scared i would be 15 weeks along if i was regular period nausea anxiety cramps paranoia bloating fatigue dizziness hazy stomach pains constipation yeast infection at the beginning of every period [ Disease ] there is some research that shows that couples share each other is bacteria however common sense dictates that everyone should keep up with their oral hygiene and get teeth cleanings every 3 6 months