I took 15 mg and I'm considering taking another 5 mg

I took 10 mg, felt the effects then got sick and threw up so the effects went away. I took a 5 mg 8 minutes ago and I'm considering taking another 5 mg. Will this be ok to do? Idk if I'll have breathing suppressions or od. I know 20 mg is a low dose but I just want to be careful. Thanks ya'll