I need help!

So i removed my implant April 13th. And my husband and i have been having sex like crazy. I know everyones body is different and dr told me i could get my AF within the month from removing it. So around May 12th But he said i could also get pregnant before i even get my first period. All last week i had cramps and lower back pain. This week back pain is very mild but i do have cramps here and there. A lil tmi but i had diarrhea for a few days. My veins on my boobs are more noticeable but boobs are not in any other way bothering me. I have been sick with a cold the past two days but i get a little neaseua here and there... are these just my hormones getting back to normal??? I dont want to get my hopes up because i really want baby #2 but i also don't want to be disappointed.