Currently TTC for baby #2 but this time I decided to try Opks to have a better chance. My last period was April 5-8th & was estimated to ovulate on the 19th. I’ve been tracking & using opks since the 10th but i used a different brand before the premom ones which i started using on the 16th. However, they all stay faint & I haven’t gotten a dark line yet. Any opinion on when i could possibly ovulate? My next estimated period is May 3...