My partner and I are TTC, my last injection was 11'th August 2011 and I was due to have it again on the 13'th November. I still haven't had a period and I'm worried, I have only had 3 injections and before them I was regular. When I went to see my nurse the day I was supposed to get my next injection she didn't say anything about having trouble conceiving and I thought nothing of it, she said I would more than likely be pregnant within 3 months. I know its only been 4 weeks, but I've been scaring myself by reading other womens stories. This week though, I have been nausea's, tired, urinating a lot, bloated, my boobs are quite tender and certain smells have been making my stomach churn. I have taken a pregnancy, this morning in fact, but it was negative. I know if I was pregnant it may be too soon to show up on a HPT, I just need some help and advice.