Clear blue weeks estimator?

Tahnee β€’ πŸ’‘2013 πŸ‘§πŸΌ2014 πŸ‘§πŸ»2016 πŸ‘ΆπŸ»2018
I took a clearblue weeks estimator and it said 3+ but I track ovulation and I know I am at most 1-2 weeks passed ovulation...13-14 dpo. Β Why would this happen? I received my first BFP two days ago after a few days of BfN so I'm fairly certain my calculations are correct. Please help. Thank you!