I'm 23 and in a very new relationship, been using condoms and as far as I know nothing went wrong but with them but here I am 18 days late, so far 3 negative tests. The last one was a week ago. Did a tesco own brand one this morning and not sure if it's positive or not. I want to get a clear blue to check but it's Easter weekend! What do you lovely people think? I've had back pain, lower abdo pain, pain down my thighs as of yesterday, a little nausea but only for a couple of days.