So I first had sex in February and had to take the morning after pill then a week or so later the doctors put me on the pill at the end of February/ beginning of March for about 4 weeks and then they gave me the injection but I still had to take the pill for the first week. I first got the injection in April or the end of March and obviously the injection is every 3 months which means I should have gotten my injection in June or the beginning of July but my appointment was on the 15th of July which was two days before the day the doctors said I actually needed the injection but they messed up the appointments and then I had it one day later on the 18th but I was supposed to get my period around the 10th - 13th of August but I still haven’t got it but for the last 4/5 weeks I’ve been feeling really sick and I’ve asked my mum if she’s ever had the same symptoms and she said only when she was pregnant. Could any one help or give me advice on what I should do?