Messed up periods!!

So I have missed my period this month, done 2 home tests which came back negative. Went to the doctors and done one their which also came back negative but they're wanting to know why my period hasn't come. So I've had to do a blood test which went massively wrong (Nurse stabbed me 5 times in the same arm trying to get blood) and I am now waiting on the results of that. If that also comes negative I have to do another test in 2 weeks which the doctors have provided me and if that then comes back negative also they will be sending me to the hospital for scans!! I'm sh*ting myself!!