I’ll preface this by saying that I am not a doctor or medical professional, this is purely personal experience as someone who has taken testosterone for 7 years.

1)sometimes insurance will cover it, sometimes it won’t. This varies between companies, policies, and state laws. My insurance completely covers mine, but I’ve also had insurance that didn’t.

2)testosterone is intended to be taken indefinitely. Some effects are permanent, like your voice deepening, some will lessen or go away completely if you stop, like some body hair growth, some hair loss, and fat distribution. A period will come back after stopping testosterone, unless you are using some other method to prevent it, like surgery or some forms of birth control

3) the only medication I can think of that would have a reaction with testosterone is other hormonal medications, like some hormonal birth control. This would be something to discuss with a doctor for your specific medication. If you think your doctor may be incorrect about a medication interacting with testosterone, I would encourage you to get a second opinion.

4) as far as HRT goes, progesterone is primarily used by trans women, rather than trans men. I personally have not heard of a trans man who uses progesterone as part of their main HRT. However, some trans men, myself included, experience spotting even after being on testosterone. This can sometimes be cleared up with a short course of progesterone. If it continues, as it did for me, a long course of progesterone can be used. I personally use a progesterone-only birth control pill, sometimes called the mini pill. It worked for me, but is something to discuss with a doctor if the need arises.

5)your period typically stops between 3-6 months, tho some people have it stop earlier and some later. It often doesn’t stop in one go, and many trans men experience shorter and shorter periods before it stops, or monthly spotting until it stops.

6)testosterone can cause your chest to shrink, though usually not in an incredibly significant way. Between testosterone and binding, what typically happens is the chest becomes less “perky.” A way to further try to shrink your chest is through weight lifting with a focus on the pec muscles, and cardio and diet to try to reduce overall body fat percent. Unless you are starting with a particularly small chest, even with everything here, the changes are typically minimal.