Only one way to find out, and fortunately it's NPP so if you start feeling shitty you can stop taking it and be clear within days. Mental sides can be hard to see in a mirror though so even better if you have someone you trust keeping an eye on you.
That being said, I don't think 100mg/wk would be enough to manifest mental sides anyway. I don't start feeling glitchy until 400+mg and usually then I can mitigate with a DHT added in.
Edit: oh wait you said it's Deca. Yeah no that's a weird doctor you got there. Sounds "online clinic-y".