What pain is this?

Question

For the last 3 nights I’ve been having random one off 1-2 min pinching pain on  right side of womb / ovary. 
I’m on CD30 and 90% of the time in the past I got a blazing positive opk on CD21. I haven’t tracked this month 🙄 fertility nurse orders. I’ve had sex every other day for the last 3 weeks. My AF is due CD 36-37. Any idea what this could be? Twinges I normally ignore as it could be anything... but this is quite like “ ouch shit that hurt “ enough for me to stop and notice and not think about anything else. 
I have creamy white CM. My boobs are full and very sore and painful. My back hurts. That’s bout it. 
Any ideas? Implantation? Late ovulation... which I doubt? Random pain? AF coming? 🤦🏻‍♀️ who bloody knows lol

Answer

I forgot to add. A couple days before the pinching sensation started, I noticed a very weird feeling in my groin on the right side. I can't describe what it felt like at all, it was just there and very very strange. That was just 1 day, and then 2 days later the pinching feeling started. I have been getting that every day at random times dor the last 4 days

Answer

I keep getting the exact same sensation and also in my lower right abdomen over by the uterus/ovary area... I am puzzled as to what it is! Hoping and praying I get my BFP this month! I've never had this feeling before