Curious: No, I never freeze any Trimix. In fact, I've gone on seven-day vacations with Trimix on which no refrigeration was available, and it worked just the same. So I think your shipment will be ok if you get it early next week.
After injecting there's no bleeding that you have to stop unless you hit the urethra, or an artery or vein, and those are visible through your skin ahead of time, so just avoid them. If you inject outside the corpus, you'll get a hematoma, which is a sizable bruise, and this consists of red cells stuck in a bulging clump, which is then cleaned up over 5-7 days by white cells. (This is why you must follow my needle-in-the-corpus procedure.) But a hematoma is the closest thing to bleeding that I've ever had, and I sometimes use a 1/2 in. needle which is 30-gauge at one place where my corpus is deeper.
Well, I'm envious of Budward's size, and what it does in his wife!

Curious, you seem to say that your size is closer to mine, so I'll give you my find-a-small-corpus technique: As I said, the corpora have no pain nerves, but curiously, they can feel my thumbnail as I use it to explore for their location. So if I want to inject in a right-side corpus, I hold the shaft in my left hand, presenting a slightly convex surface to the needle. I explore up and down the shaft with my right thumbnail tracing the corpus, which is not straight ahead like the medical diagrams, but has a meandering route, and it's at slightly different depths at differing locations.
This diagram is misleading in that it shows erect corpora, which look easy to hit. It recommends the "clock method" in which you imagine injecting between 1 and 3 o'clock on the right side and between 9 and 11 o'clock on the left side, but in my case that's a blind method because my corpora are so thin. Whatever method you use, stay away from "12 noon," because that's where the dorsal nerve is.
I inject the other side each time, changing position along the shaft, to spread out any needle damage. The fastest way to get to your correct dose is to keep a spreadsheet of all the injection parameters each time: amount, location, result, relative stiffness if any, duration, bruises, etc. I imagine my shaft divided into five zones, so I have ten injection locations, which I rotate through in case needle damage causes any problem, like scarring.
When I was learning, it took me three weeks to get it right, doing a solo practice session every three days. (Don't let her get her hopes up this month!) I started with double the doctor's office dose, which was 2 units, then went up maybe 15 percent each session. You want to avoid an over-four-hour erection, known as priapism. I was told that at the six-hour point tissue runs out of oxygen and gangrene begins. Before starting, get the antidote, phenylephrine capsules. This helps bring down a too-long erection; most guys take 100-150mg, but it works very slowly, because it has to go through your stomach and into the small intestine before it's absorbed. At Walgreens it's Wal-Phed PE and it's non-prescription but behind the counter and you have to sign for it. Also keep an ice pack handy. If you do get an erection that looks like it's going to exceed four hours, head to your ER where they will drain the blood and you will entertain the nurses. Q: "What's worse than ED?" A: "Getting your gangrenous penis cut off to save your life." If you have any doubt what your small starting dose should be, or how to read the syringe calibrations, ask us.
Age 79 in 2024. On testosterone replacement due to hypothalamus malfunction. (Attention depressed guys: low testosterone is a cause.) Healthy health nut but ED due to getting old. Like to keep enough cardiovascular ability to thrust for 30 min.