Ovarian cyst

I think I have an ovarian cyst on my left ovary. I've had them before and the pain is the exact same. I have an ultrasound booked for tomorrow to check my dates and to look at my ovaries but I think it burst last night. I twisted funnily in bed last night and twinged it and was in excruciating pain and when I woke up today I went to the loo and had alot of brown discharge. I'm now cramping pretty badly on my left side.

I don't know if I should try and get it seen to today or if I should just wait till my scan in the morning. My doctors surgery isn't open today and the walk in clinic always has a 4-5hr wait so going there with a 6yr old and a 16m old will be a nightmare. The other option is going to the hospital but I doubt the wait there would be any better.

So do you think it'd be alright to wait till morning or should I head to the walk in clinic or the hospital?