Need advice

Lolly
So I suffer with pcos,, it will be coming up to 3 months on the 2 July.. Yes I have been the hospital I am waiting for a letter to come through for a scan but this last week I'm constantly feeling sick... I still have been ovulating I've still been doing ovulation test and for the last 2 morning I have woke up went the toilet when I wipped there has been a spot of blood I've been wearing towels to keep an eye on it and I haven't bleed anymore could this be implantation or my period has anyone been through this before ??  Oh and I've had sore nipples