Help me out

Help me out... So I've been trying to get pregnant for about 6 months maybe more, after being told "try on your period" multiple times. I finally did. Once in the shower, one time in bed. My period lasted 3 days, after that, I would only bleed if I had put in a Tampon or had intercourse. It got very confusing, so I didn't know if I should have logged in if I had my period or not. It's been 4-5 days, I'm having bad migranes/headaches and cramps, sleeping after activities. I'm pretty sure it's all to early and I'm over exaggerating... Help?