Ramtin A. Cohanim, MD

if it's looked this way from day one then it's over-harvested. Shock loss is a real phenomenon in both donor and recipient sites but in your case the timing suggests over-harvesting. 

Stopping Finasteride is obviously a personal choice but its beneficial to make this decision having more info. Although you might not be seeing a lot of regrowth, finestride might be slowing your loss. Stopping the medication will reverse that.  The side effect you have experienced might be alleviated by changing your dosage or frequency. 

Long answer first (see below for the short answer)

There many factors that contribute to hair loss. Common culprits are stress, nutritional deficiency, medical conditions, medications, genetics and mechanical, etc. Oftentimes more than one cause is at play. Choosing proper treatment starts with identifying the cause and either eliminating the cause (nutrition, stress, medication) or slowing the process responsible for hair loss (autoimmune, genetics, stress)  and since we are usually fighting more than one cause the treatment is usually multi-modal.

Without knowing your condition it's difficult to give you the optimum treatment but many people have some success with conservative treatments such as ensuring a balanced diet and adding vitamins. 

As some of the other commentators mentioned the association with birth defects would have me steer you away from medications but minimally invasive treatments such as PRP or even FUE might be a good option if you do not have satisfactory results with conservative treatments. 

Short answer: optimize your nutrition and give PRP a thought. 

yes, your hair will shed.  The shedding doesn't always happen exactly on the 10th.  The shedding is a normal part of rd process and it could take longer to take place 

shedding could be caused by a number of things and not all are pathologic. Meaning normal shedding happens as part of normal hair life cycle.  It's normal to lose about 100 hairs everyday.  I still advice you to see a specialist to rule out pathologic causes of hair loss some of which are treatable.  

Ramtin A. Cohanim M.D. 

it's normal for the hairs to shed at about 15 says.  The grafts or follicles are still in place and you'll see regrowth in a few months.  

However there are instances that the actual grafts fall out (due to rubbing, inappropriate slit size, etc) but that usually happens in the first few days. 

Good luck 

Ramtin A. Cohanim M.D. 

2.5 months is too soon to tell.  The hairs wills start to come in slowly but you won't see final results till around 9-12 months. 

At this point (two months) you can consider the transplanted hairs the same as the non transplanted hairs.  So touching and a tight hair band should not alter finsl results. 

It's ok that some of the hairs have not fallen. This happens occasionally. 

Can you remember which side was done first?

The reason I ask is because the likely explanation is, the local anesthetic wears off sooner on one side resulting in asymmetric retraction of some of the muscles. The side with greater muscle tone retracts higher than the relaxed side. 
This may explain why the eyebrows are designed asymmetric, and only after the anesthesia has worn off and the swelling decreases does the asymmetry become noticeable.

I suggest you check in with your surgeon now.  Good news is down the line you have options ranging from reshaping the eyebrows to even revision transplant.

Ramtin A. Cohanim M.D. 

What you describe sounds normal post hair transplantation.  You will start to lose the transplanted hair at around 2 weeks.  You should notice some hair growth at around 3-4 months.  

You were also concerned about losing some non-transplanted (or native hair as you called it) remember we are constantly losing and regrowing hair, about 100 hair loss daily is about normal. 

Ramtin A. Cohanim M.D.