Bleeding at 10 weeks

I am 10 weeks pregnant Thursday night me and my husband had sex about 10 on Thursday night . I went for a wee at about 4:30 in the morning on Friday and all was fine and normal. I then went to get changed at 7 and noticed watered down blood about a table spoon in my pants. I did not feel it and have had no pain, it then went to a very light pink spotting that I only saw when I wiped. This morning I'm now having brown spotting but again only seen when I wipe. Any ideas? I called the midwife they booked a scan for Monday but I'm impatient so have booked a private scan for today. Anyone had this?