Kinda hard to say. Could be undigested food particles. Some of the folks here have hard evidence like actual specimens, others are sure they have parasites based on what they feel going on in body..like distinct movement in organs or the feeling of being bitten on the inside, or twitching of something foreign, serious skin issues, or major weakness. Some folks want to learn by reading forum so they can practice preventative measures so they won't contract them. Others on here might not have parasites at all. Then there are those who do not believe they exist until they get infected too. But rumor has it that many people may be host to one kind or another, don't know the estimate. Don't assume that parasites are causing your symptoms, but yes do investigate it. Others here may be able to guess at identifying any specimen you might photograph. But, maybe you incurred some kind of a bacterial infection in the hospital. Perhaps you should look into that possibility as well. Could be something else entirely. Try not to panic. Remain calm. Just take one step at a time to figure it out. Once you think you know what it might be then choose a specialist for that specific ailment or get family doc to refer you. Keep a journal of your symptoms. Narrow your symptoms down to the major 3 or 4 symptoms when you talk with a doc first time. Tell him/her the rest in next appointments. Good luck and congrats on baby. P.S. read in depth health tips on curezone. Drink lotsa herbal teas.

Please repost your message on the Ask Barefoot Herbalist Forum for his response. His screen name is MH or 33957.
Best wishes