Scared to go to movies after weight gain

I gained 15-20lbs, I haven’t left my house because of it. I made plans to go to movies on Saturday and I’m terrified I’ll see someone that last saw me before my weight gain.

I’m scared I’m gonna look like I had a glow down or got fat. I’m even considering not going. Do you think that’s enough of a weight gain for someone to think I got fat? Should I still go? I’m planning on wearing baggy jeans and baggy tee. I went from 135-140 to 155 5’4