Need advice! Starting clomid?

So I went to my OB today to talk to her about ttc. I have irregular cycles (varying in length 21-55 days). I also take a low dose of lexapro daily for mild-moderate anxiety/depression. We decided I'm going to wean off of the lexapro and she gave me a prescription for clomid. She said I could start the clomid this month but the side effects of the clomid and stopping the lexapro might be too much. Or I can wait until my next period starts (who knows when that will be!) and start the clomid with that cycle. She pretty much left it up to me to decide. What should I do? Start the clomid now or wait until my next cycle? Anyone who has taken clomid before what side effects did you experience? Sorry for the long post.