Ovulation timing question

So usually I get only 1 positive LH surge using Clearblue OPKs. When I input my testing information into Glow it says that I ovulated on the day of my positive surge. So, as an example, I’ll get a negative (-) on Monday, a positive (+) on Tuesday, then another negative (-) on Wednesday and every day after. According to Glow I ovulated on Tuesday because that’s when I had a positive LH surge.

Well, yesterday I saw my OB and asked her about it and she said I actually ovulate 12-36 hours after my positive surge, so it could be the following day or even the day after that. So, who’s right? Glow or my OB? Also my OB told me I should have sex up to 5 days after my positive LH surge just in case! My husband travels for work almost every week so that’s a bit difficult! Usually we have sex 1-2 days afterwards, but not 5.