strange bleeding?

my fellow and I engaged in intercourse the 11th which was right before he left on a trip, we then again engaged in the act the 19th -saturday night/sunday morning- I have light spot bleeding and cramping. saturday from the time I woke up I felt nauseous and had severe shakes. I felt as though I would pass out, I thought it was ‘cause I did not have enough iron in my system but it subsided after I laid in the tub with cold water running from the shower head for 40 mins. the second I got out the feeling jolted back. my mom brought me a shawarma which I have been missing since before the quarantine (I love them😋) anyways I felt better after that and then around 11 he came to see me and we had intercourse. we cuddled in between rounds and after when we were done @ around 4:30 am. I went into the kitchen and poured some honey then my almond milk and heated it up, took it to my room to help me sleep but I couldn’t sleep so I started gathering clothes for the wash. I fell asleep doing that and woke up at noon. now i’m wondering if it could be implantation bleeding or a second period for the month (which I get quite often), but this is only spotting and light cramps, and I’ve never had a light period. and sorry I went on like a story but I needed to recall all events leading up to this so I wouldn’t have forgotten anything. Thank you for taking the time to read through and for any advice you have :)❤️