Butterfly/twitch/tickle/flutter feeling in lower abdomen.

Hello everyone! I am new here, and was wondering if anyone had an advice. I know I am at least two weeks away from being able to test but I wanted to know if anyone has ever had this feeling for it to be attributed to early pregnancy. My cycle is usually about 25-28 days, it varies. I have never been regular in my whole life. I had sex on the 7th Day of my cycle (Sunday the 9th of July), and the condom broke, I took Plan B less than 32 hours later. Today (July 17) is "Day 15" of my cycle. Starting on Saturday evening I began to feel light flutters on the left side of my abdomen, where I assume my uterus is, very low. 😂 These flutters have been on and off since then and still have not stopped. I have felt them standing up and while sitting down and they can last from a few seconds to about a minute or so and are on and off all throughout the last 3 days. If I put my hand on that part of my stomach I can't feel it outwardly but my insides sure feel it! It's a very strange feeling and silly feeling! Has anyone had this feeling before? I honestly can't say I have ever felt it. I could be overthinking things, maybe it's the plan B (I don't recall it the last time). Or am I feeling some sort of implantation or something.. I am unsure if any implantation bleeding has occurred because on Wednesday (july 12th) I woke up with what I wasn't sure was a yeast infection or a Uti so all the medicine I have been taking has turned my urine dark yellow/orange. Very strange. I don't have the urge to pee a lot like a UTI but it stings when I get to the end of the stream and I feel pressure in my abdomen. I know I am probably being silly but I just thought I'd ask! So if any of you have had this strange twitch, butterfly feeling, sharp pain/cramp (just once) and ended up NOT pregnant, I would love to know! Oddly enough today I feel like I could be getting sick, sore throat/runny nose the last two days. Clearly I am falling apart all at one time!! Hoping these are silly Plan B side effects that are messing with my emotions and body! Thank you in advance for any help! :)