In an emotional Instagram post, Lindsay Lohan reassured fans Tuesday that she is fine after her highly public blowup with fiance Egor Tarabasov.

“Dear friends,” the actress began her lengthy post on Instagram, “I’m good and well. #ATM I am taking time for myself with good friends.” The post showed a photo of Lohan in swimwear and a scarf, at the helm of a powerboat on an unidentified body of water.

Alluding to a series of weekend tweets and Instagram messages in which she castigated Tarabasov for alleged infidelity, the “Mean Girls” star wrote, “I am sorry that I’ve exposed certain private matters recently. I was acting out of fear and sadness . . . We all make mistakes. Sadly mine have always been so public. I have done a lot of soul searching in the past years, and I should have been more clear minded rather than distract from the good heart that I have. Social media comes with the territory of the business and the world we now live in.”

Lohan said she had not intended “to send mixed messages” when she wrote Monday that “a private matter has become more public than I can control,” and asked for privacy to work out issues that led to her and Tarabasov’s loud argument at her London home Saturday, captured on video.

“Maybe things can be fixed . . . Maybe not . . I hope they can. But I am 30 years old and I do deserve a #GENTLEgiant,” the actress, who was raised in Cold Spring Harbor and Merrick, wrote, with a hashtag that linked to an Instagram page of dog photos. “Life is about love and light. Not anger. Thank you to those who stand by my side.”

Meanwhile her father, Michael Lohan, told “Inside Edition” that he took his daughter’s Friday tweet reading, “lindsay lohan labour pains trailer — I am pregnant!!” as serious, though it linked to a still from her 2009 romantic comedy “Labor Pains.”

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“I have no reason not to believe her,” Michael Lohan, 56, said. “She is my daughter. She hasn’t lied to me. She hasn’t misled me. I go on what she tells me.” After the entertainment-news program showed him the argument video, he wrote three angry texts directed at Tarabasov, according to images he evidently supplied to TMZ.com, including, “You threaten my daughter, touch her or if anything happens to her and you will have no where to hide. . . . ”

Lohan’s spokesman did not respond to a Newsday request for comment.