I hate starting new jobs; I don't get comfortable in them for at least 6 months when I'll suddenly realize I have a clue what I'm doing and am not nearly so anxious, etc.

Sounds like you are doing okay, other than disobeying the safety rule with needing the gloves, bet you won't do that again? :-) I'd talk to your doctor about the clotting thing, sounds like it could be a med you are on or something else and might be significant.

How long you been there? I'd give myself at least a month before I let myself worry I might not be doing well/wouldn't keep the job? How long is your training/trial period? My jobs always gave me 3 months and I was okay by then as far as being able to do the job. If they just hired you and another/other people, then they must be doing okay or they wouldn't be able to hire? They know they have to pay "extra" because you are just a trainee so not worth as much yet as a skilled line worker. That they did not just hire you would make me feel even more secure; I have another person in the same shoes I am learning and they are doing well enough to hire multiple people at a time?