Remove the lamp from the projector. Ensure that it has no cracks, discoloration or "smoky" appearance. It may have blown out.
More than likely, what you are seeing is dust on one of your LCD panels. Try pausing your image so that these abnormalities are clearly visible. Then simply de-focus your projector in BOTH directions.
You should see these blobs actually become a solid object either in the form of a string of lint or a spot of dust. To avoid dust blobs from occurring, it's important to perform routine maintenance on your projector. Cleaning of the filter with a vacuum on a monthly basis will help reduce accumulation of dust buildup. .
Pico projectors are generally made for the office, that’s just the reality of a front projection DLP that’s meant to be carried in a laptop bag. Vivitek remains committed with the Qumi Q5 LED Pocket Projector which is one of their smallest entries in the lineup, while trying to add some entertainment value to sweeten the deal.