Please know you're not alone! I remember when DS1 was in day care, he was about 2.5 and had an epic meltdown during there Easter party that's typical for him when he gets overstimulated. All the parents were watching in horror and one mom whispers in a not so whisper "well, we know who we're NOT inviting to our daughters birthday party". I have never felt so heart broken in my life. We packed up and I drove home in tears. It still hurts to think about all the times we've had similar incidences. Thankfully DS1 has gotten better and since DS2 is older and in his class at day care and school DS2 is VERY protective and he always has a buddy. I thank the heavens every day that they gave us DS2 because he's the best thing that ever could've happened to DS1. It really helps that DS1 is in our districts SpecEd preschool, so ALL od the parents, even Peer parents are so nice, understanding and helpful. The school has a "spirit day" every 1-2weeks where they so a weekend lunch or week day dinner where all the kids and their families get together somewhere and play. The parents are so amazing! Having a child with struggles and the parents of the Peers are truly nicer, very accepting people than what we've ever experienced in "regular" day cares/private preschools. DS1 has made friends outside of DS2 and it's the most beautiful thing to hear one of his classmates say "Bye K, see you tomorrow" and seem really excited to see him when he gets to school. The Peers are amazing "neurotypical" little kids too! Many of them are siblings of the preschoolers in the SpecEd program.
I know you're little one is probably just a typical toddler, but you are definitely not alone!

We've gotten judgments and nasty nasty comments from parents at private day cares, teachers/directors at private day cares, strangers and even family. He is the most empathetic, sweet, caring, and intelligent little boy. He just has his struggles. It's nice to have him in a school where the teachers, kids and parents see his positive aspects because he really does have a lot. They know how to handle sensory issues, etc at his school though, so he has less trouble in general. He was about 12mos old when we really knew something just wasn't right and we're glad we pursued it because he's really excelled and will be easily mainstreamed without issues by first grade. He'll always have his oddities, but in all honesty, who doesn't?!?!!!