I was given Doxycycline to prevent infection from an HSG procedur...

I was given Doxycycline to prevent infection from an HSG procedure. I took one the night before the procedure, two the day of and one the morning after. So total of 4 capsules of 100mg each. I'm supposed to take the full course, which is 6 capsules, but I'm going to stop now. After the 4th capsule I started having bad stomach cramps, a bit of nausea and severe diarrhea. I know the risks of not completing the course but I'm not going through these stomach pains again. No more Doxy for me! I have a similar bad reaction years ago to an antibiotic called Augmentin. I guess I have to avoid those 2 kinds of antibiotics in the future. After reading all the posts, I can't believe they still prescribe Doxy to people. It seems horrible.