Faint line on a cheap test but...

Georgie • Going to be a first time mummy and expecting identical twins 👶👶🍼🍼
Hi Ladies,
My AF is due on Saturday but my boobs have been so sore and I've felt a bit weird so thought I'd do one of the cheapo tests and within a minute it came back with an extra line, I don't want to get my hopes up, but has anyone else used these and had a good or bad experience? 
Thanks
Georgie :-)