Hi Ladies! I need some help figuring out what the hell is going on with my body... I have a 28 cycle:

On Monday (CD 13) - Abundance of EWCM strings visible when I pee, negative OPK

On Tuesday (CD 14) - EWCM only when I do a self examination, negative OPK

On Wednesday (CD 15) - watery CM, huge temp drop, negative OPK, acne on my chin

On Thursday (CD 16) - slight wet CM, slight temp increase (0.35F), positive clearblue advanced OPK (peak fertility) with morning urine. This afternoon with non-digital opk negative...

When did I ovulate? I am so confused!

Help!