I notice a bulb at the end of the fallen planted hair, i want to know if that is a follicle?

After 72 hours your follicles are pretty much firmly rooted. Waiting 25 days to have a shower is not required. Start having normal showers and do not worry if you feel follicles are falling out. 

Waiting 25 days to take a normal shower does not sound normal. You may want to contact your doctor for post operative care instructions.

What you are describing sounds normal. Most transplanted hair falls out between a week and two months after transplant, and often it looks like small little bulbs are attached. The graft itself should remain unharmed and should start growing a new hair in the upcoming months.

It's always a good idea to check in with your surgeon.  At 25 days from surgery, this shedding of scabs along with hairs that contain the "bulb" is fine.  The cells needed to grow your new hair are already embedded in place and you will begin to see new growth in about 3-6 months.  

These hairs will sooner or later shed. They are never a problem for new hairs that start to grow. Usually, there is a lag time between the time the hairs shed (2-8 weeks) and the time the new hair grows (3-8 months). IF for any reason, there is an overlap between the two, pay no attention to it for when the new hair grows, the old hairs from the grafts that may persist beyond 8 weeks, will eventually shed