Will I hear a heart beat?

So just like every one else I was trying for a baby with my lovely partner, we had become very busy as we had gotten a puppy and weren't trying anymore obviously still having sex but eventually when my period was due to come it was late I tested n tested and faint lines became clearer until...

Omg! I couldn't believe it. After my partner got gastroenteritis from a take away and I went to the doctors to make sure baby was OK as I hadn't had it confirmed yet. I was getting period like pains but everything else seemed fine.

Doctor has booked me for an early scan and I should be 7 weeks but dunno if I will hear a heartbeat.