Can’t figure out what’s wrong, test results don’t indicate anything out of the ordinary!Any insights would be greatly appreciated!

TLDR at the bottom. Thank you all in advance for your time.

For months now my girlfriend has been having trouble sleeping at night. She feels like she’s gaining weight no matter how much she works out. She’s never had irregular periods before but now they’re occasionally irregular.

Here’s the chronology of events. She fell pretty sick in December 2022, was on antibiotics for a bit. But she was also supplementing with probiotics, to minimise side effects. Since then she developed recurring headaches and recurring haemorrhoids. Haemorrhoids were a problem she had as a teenager, but got severely worse after she fell I’ll. They have since gone away but the random recurring headaches have persisted till date.

Between Jan and Now: She’s visited the OBGYN, tested her hormones (including TSH, FSH,) tested her liver function, conducted the routine blood panels, tested cholesterol etc. She’s tested markets for PCOS/PCOD etc, too but everything is normal. (List of tests in pictures. Sorry I don’t have the exact OBGYN test details)

All the test results have come back normal. All docs have said there’s nothing wrong with her that they can see from any test.

She’s checked food intolerances and eliminated them from her diet, but to no avail.

She’s even tested inflammation markers but no result.

She’s got an active lifestyle, she’s a yoga teacher and nutritional consultant. She’s conscious about getting sunlight with early morning and evening walks. Works out regularly, but is still finding she’s gaining weight around her waist and belly, getting random headaches, and struggles to fall asleep every night (sometimes 3 in a row).

All of this has taken a toll on her mental health too and it’s becoming a viscous cycle.

Has anyone had/heard of similar experiences? if there’s anything we have missed and you recommend we investigate?

On one hand we’re grateful that all test results are normal but we’re at our wits end trying to figure it out what’s actually wrong and are struggling to find a solution.

TLDR; girlfriend fell sick months ago and , since then has had haemorrhoids that went away, random headaches that persist till date, occasionally irregular periods and struggling to get sleep. All Doc investigations and tests results are coming back normal. But the issue still persists.

Not expecting med advice but any pointers or ideas would be appreciated!