Kinds of antibiotics symptoms and conditions

I have been taking Loestrin 24 for almost a year and a half now. At first the pill seemed like a godsend because it offered me shorter periods and more time in between period. However, I have recently become sexually active with my boyfriend and the pill seems to have turned on me completely. In May, I experienced an alarmingly light period with barely any bleeding and almost non-existent cramps. I attributed it to stress at first, but took a home pregnancy test just to be certain. Thankfully, the test came back negative so I put it out of my mine for awhile.

The following month I yet again experience a period that was barely the equivalent of spotting. Alarmed, I went to see my gyno. She told me that barely to no bleeding is completely normal with Loestrin 24, which is something that she failed to tell me of before I began it.

Tonight is my second night of iron pills in my pack and I have yet to bleed at all. On top of that, this entire month I have been experiencing night sweats, headaches, abnormal weight gain, and extreme irritability towards my loved ones. I can barely even stand to talk to my boyfriend on the phone regardless of the fact that I know I love him very much.

Should I stop taking them? Is there any suggestions for better pills?

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.