How to Return to USA without any problems

Hi bro,
I have a doubt/question:
Intro: I’m currently in initial OPT, and my marriage is fixed in India on November 8th, and currently I’m unemployed, joined a consultancy and took a unpaid offer letter.
Question: if I want to go India and come back to here USA before December 15th, then what are all the documents I need to take with me and I should get back here to USA without any immigration problems.
So kindly please help me. 🙏🏽 My total travel days will be 38 days. Traveling from Detroit – Netherlands – BLR, and same route vice-versa while returning.
Please let me know should I need to post this message any where? I’m new to ur page. I have seen your posts it’s really helpful to many others.
Please help me too.
Thank you.