You said you had your period like normal, you shouldn’t be pregnant then. Maybe you’ve been stressed out or your eating habits are different. As for the vaginal tightness, I’m sure that happens to all girls at different times of the month. After I have my period, it seems like I’m more tender down there but a week before my period is due, it’s the total opposite! If your really worried, talk to a doctor, thats what they are there for…Good luck 😉