Doxycycline Hyclate and organisms

I'm also on Doxycycline Hyclate, 100 MG, twice daily. I've had slight mood swings, and lately I've been worrying about silly things for no apparent reason. Everytime I felt different body changes that normally didn't occur, I would think something is wrong with me when such thoughts were riduclous, especially since I'm 22 and extremely healthy. But I've also been having really weird lower abdomen pressure. It doesn't necessarily hurt, but it's quite annoying. Has anybody else had similar symptoms like this?

Ah, another thing, be careful not to get into the habit of not taking the full dosage of antibiotics prescribed. If you're taking it for an infection and you cease taking it prematurely, the organisms will develop a resistance to it and then it will be more difficult to get rid of.

Also, thanks for the courage to post your concerns. I wasn't aware that this antibiotic could cause such emotional and pshychological trouble! Now I feel a lot better about my own symptoms!