Hi. I have been taking the combination pill, Trinessa Lo, for a whole year as of this month. I had a normal period on 5/3/17, and when all of my inactive pills were done, I went to the pharmacy to pick up a new pack as normal. It was Saturday and in order to be on schedule I had to have a new pack by Sunday. Apparently I needed doctor authorization or they couldn't give me the pack, so my mother called the doctor and she prescribed a months supply of Brevicon (28) another combination pill. She told my mom that if I started it on Sunday just like I would've Trinessa, that I would still be protected. Sunday comes, and immediately upon taking brevicon I was terribly nauseated, had severe headaches, and I was really moody. I kept taking brevicon, as I had nothing else to do, but once I finished a whole row of pills + 1, I scheduled an appointment. I explained to my doctor what was going on and she said that she would normally have me finish brevicon and then switch pills, but since I was having such a negative reaction that I needed to start my new pill, (Trinessa again) in the same place I was with brevicon. The appointment was on Monday, so I skipped week 1 of Trinessa +1 day of week 2, and took Monday's pill in the second week of pills. After 3 days of being on Trinessa, I had sex with a condom. I always use condoms and I made sure to especially due to this wacky birth control situation. Afterwards, I wiped and saw blood. The bleeding continued, going from light to red to semi-flowing to small spotting for about three days. It eventually turned into old blood and was gone. My first reaction was implantation, because I run to google when I see the first sign of blood out of the ordinary .. haha. But I thought that'd be strange since I always use condoms and up until my mid pack switch I was protected by my pill as well (I take it perfectly no misses or lates). I haven't bled since, and my period is due literally in two days and I'm freaking out. What if it doesn't come? Is it because I had breakthrough bleeding a little over last week? Is it because of the switch so suddenly? Is it pregnancy? I don't know. I would really like an opinion.