Ectopic or miscarriage?

po
Okay so I had faint positives and woke up this morning with bleeding, I went to the doc they said I'm having a miscarriage and to go home and rest, its night time now and my pains have went from bad period pains to a really sharp stabbing and cramping on my left side going down to my vagina, my bleedings like browny red colour (tmi sorry!) With only little clots, my other miscarriages have been really heavy red with massive clots and really bad period pain, this just feels different! Codeine isn't helping it's just got worse it hurts if I move a lot I can't walk properly and the pains taking my breath away?! Idk if they're the symptoms but the one sided stabbing pains making me nervous?!