Breast growth is going to take longer than a week to occur.

Progesterone is known to cause drowsiness in some people, but not everyone. It’s not a guaranteed side effect even if it’s common. I am not sure I would say I feel drowsy on progesterone as much as it helps me stay asleep and sleep longer when my estrogen is peaking.

It also depends on how you’re taking it, oral progesterone is mostly filtered by your liver so it doesn’t meaningfully raise your blood progesterone levels.

If you want to use progesterone, I suggest taking it rectally (just gently push the oral pill up past the sphincter using a finger; using lube is often a good idea and try to relax - it should never hurt).

I have never heard of someone having insomnia due to taking progesterone. It’s also possible the insomnia can be caused by anxious or alert thinking about whether you’re falling asleep, maybe onset by stories about progesterone effecting sleep? I know that sounds silly, but it happens to me - I can struggle to relax and just let go, I get so nervous about whether I’m going to fall asleep that I develop “sleep resistance” and anxiously keep myself up.

You might read about and implement some sleep hygiene practices:

health.arizona.edu/sites/…/Sleep Hygiene.pdf

• go to bed & wake up at the same time each day (try to vary these times by less than 20 minutes), including weekends & holidays (maybe keep a sleep diary when establishing this habit to help you keep track and create better adherence and transparency)
• don’t take naps
• relax before bed to help get sleepy
• don’t eat heavy meals near bedtime
• wait until you’re sleepy to go to bed
• if you’re struggling to sleep (like having anxious thoughts), after 20 minutes, don’t continue to lie in bed wide awake - get up and do an activity to help you unwind and make you feel relaxed and sleepy, then go back to bed once you feel sleepy
• avoid bright lights before bed - avoid screens, use a blue-light filter on your screens at night
• don’t try to fall asleep - worrying about whether you’re falling asleep can make it harder to fall asleep, so just relax and don’t worry about whether you’re successfully falling asleep or not
• reduce stress in your life (<cue ironic laughter>)
• don’t get involved in stressful activities before bed - set aside business, important conversations, etc. a few hours before bed to give yourself time to unwind
• don’t drink coffee or tea (or any other source of caffeine or stimulants) after lunch
• don’t go to bed too hungry or too full
• avoid alcohol within 6 hours of bedtime
• don’t smoke or use nicotine within 2 hours of bedtime
• engage in aerobic exercise regularly, but avoid strenuous exercise within 6 hours of bedtime (if you have restless leg syndrome when trying to fall asleep that seems related to exercise, I recommend stretching - that has helped me avoid it)
• get enough sunshine to help maintain a normal circadian rhythm
• don’t use sleep aids on a regular basis
• keep all tech out of the bedroom (no phones, no tablets, no TVs, etc.)
• only use your bed to sleep in - don’t use it to work or do other activities (other than sex)
• keep your bedroom dark, quiet, and cool - use blackout curtains, white noise machines, earplugs, eye masks
• don’t sleep with pets if they disrupt your sleep

Nightmares and strange dreams are actually commonly reported on oral progesterone. The prog is metabolized into other hormones that have a wide variety of mental effects, including feeling giddy when awake and such.