Please don’t think I’m dumb I’m not used tic. When we tried for my son we just had sex alot

I’ve been following my body signs and last night I got severe severe cramps to the point I was crying on my right side I’m in my fertile week and pretty sure it was me ovulating but I’m not sure so we had sex??Is severe cramps normal? My period was 3 days long ended November 7 had sex November 8 had bleeding November 11 had sex November 14 the start of my fertile week and then I had the cramps yesterday. I still have cramps but not severe and I’m really nauseous/sick to my stomach and i have wanted to eat much.