Ovulation confusion. Help!!!

Am

Okay so this is my second full cycle after a missed miscarriage in May at 18 weeks. Last cycle was normal, yay! This cycle is throwing me a bit. Yesterday on cd9 I had a negative opk but tons of ewcm, like globs of it.(sorry tmi). So last night hubby and I dtd just because we felt like it. Today cd10, tons of ewcm again. OPK this morning shows close to ovulation.

Glow analyzer also said close. I take the analyzer with a grain of salt.

So, just now I start feeling crampy, not abnormal, but since I know the OPK is almost positive, I figure I will test again. This one is positive. my eyes and Glow agree for once.

I enter it in, Glow bumps my O date from the 16th to tomorrow the 13th. Normally I O cd14 or 15. Should I be worried that this is happening much earlier? When is the best time to dtd again? I am so afraid I am going to have bad timing. I just want to catch my rainbow.