spotting

I have been trying to conceive from almost 6 months now ,this month my Gyno had asked me to have sex on 24 th n 25 th of nov n he gave me hucong injection on 25 th morning too helping me to conceive earlier .according to glow today 8 th dec  s my period due ,I have been getting brownish coloure spotting from last night and I just can't understand if I have got my periods or it's an implementation bleeding .i just know I want my baby n I don't no why god is delaying it soo much for me ,too depressed.