How many days of positive OPKs is normal?

Today is my second day of dark positive OPKs. Do I need to BD tonight too? How many days of positive OPKs is normal? It’s super late for this (CD 20) and I also had a peak on CD 11, CD 17 and 19, so I’m super confused! Is my body just repeatedly trying to ovulate or something? Getting frustrated thinking I’m in the TWW but then getting anither positive :(

Help please!