Possible pregnancy

I think I might be pregnant with baby number two. My first is about 5 months old. I’m pretty late and I’m very tired all the time. Those are my only symptoms. I don’t know what to do I don’t want to take a test. I take Xanax everyday, 1 mg in the am and 1 mg in the evening. I have been drinking(very rarely) and I smoke weed daily. I absolutely love my baby boy but I have no idea how I could go through another pregnancy. Does anyone have any advice? I don’t know what to do I’m really scared to take a test.